Nucleus
•Download as PPT, PDF•
4 likes•2,571 views
Cell biology studies cells and their components. Key developments include Anton van Leeuwenhoek observing cells under a microscope in the 1600s and Rudolf Virchow proposing that all cells come from existing cells in 1850. The cell theory states that all living things are made of cells, cells are the basic functional unit of life, and new cells are produced from existing cells. Cells contain organelles that perform specific functions like the nucleus which houses genetic material, cytoplasm, and membrane. The nuclear envelope contains pores that regulate transport between the nucleus and cytoplasm.
Report
Share
Report
Share
Recommended
Nucleus
The document provides details about the structure and functions of the nucleus. It notes that the nucleus was discovered by Robert Brown in 1831 and is considered the control center of the cell. It contains nuclear membranes, nucleoplasm, chromatin reticulum, and nucleolus. The nuclear membrane contains pores that allow transport of molecules between the nucleus and cytoplasm. The nucleolus forms in the nucleolar organizer region and is involved in ribosome biogenesis. The main functions of the nucleus include controlling metabolism, synthesizing and processing RNA, and storing and assembling ribosomes.
Nucleus
The nucleus is the control center of the cell that contains DNA and controls its metabolic and hereditary activities. It is enclosed by a double nuclear membrane with nuclear pores that regulate transport. Inside the nucleus is nucleoplasm containing chromatin fibers that coil to form chromosomes during cell division. The nucleolus forms within the nucleus and is responsible for synthesizing ribosomes. The nucleus varies in shape, size, and number depending on the cell but is typically a single, spherical organelle located in the cell's center.
Nucleus
The nucleus is a double-membrane bound structure that contains a cell's genetic material. It is located in the center of eukaryotic cells and houses DNA in the form of chromatin and chromosomes. The nucleus regulates gene expression and cellular metabolism. It contains nucleoplasm, nuclear pores, chromatin, and a nucleolus. The nucleolus produces ribosomes and is involved in protein synthesis.
Nucleus
The nucleus is the control center of the cell, bounded by a double nuclear membrane. It contains DNA in the form of chromatin or condensed chromosomes, as well as the nucleolus where ribosomal RNA is produced. The nucleolus builds ribosomal subunits which exit through nuclear pores into the cytoplasm to form functional ribosomes for protein production. Ribosomes are structures composed of rRNA and proteins that exist freely in the cytoplasm or bound to the endoplasmic reticulum, where they synthesize proteins. The endoplasmic reticulum processes proteins and manufactures membranes throughout the cell. It includes rough ER where bound ribosomes synthesize proteins for export, and smooth ER which performs metabolic functions and membrane production. The Golgi apparatus finishes
Nucleus
The nucleus is a large membrane-bound organelle found at the center of eukaryotic cells that contains the cell's genetic material in the form of chromosomes. It directs the cell's activities and is involved in cellular reproduction. Key features include being visible under a light microscope due to its acidic nature, containing DNA, RNA, and the nucleolus which produces ribosomes. The nuclear envelope encloses the nucleus and contains pores that regulate material passing in and out.
Nucleus
The nucleus is a spherical organelle found in eukaryotic cells that is surrounded by a double membrane nuclear envelope. It contains the cell's genetic material and coordinates various cellular activities such as protein synthesis, cell growth, and DNA replication and transcription. The nucleus contains chromatin, which packages the DNA, as well as nucleoli that produce ribosomes for protein synthesis.
The nucleus
The nucleus is the control center of the cell that contains most of the cell's DNA. It directs all activities inside the cell like growth, metabolism, and cell division. The nucleus is enclosed by a double membrane nuclear envelope that contains nuclear pores to regulate what enters and exits. Inside the nucleus is chromatin containing DNA, as well as the nucleolus for producing ribosomes. The nuclear lamina lies beneath the inner nuclear membrane and provides structure.
Nuclear envelope
The nuclear envelope consists of two nuclear membranes, the nuclear lamina, and nuclear pore complexes. It separates the nucleus from the cytoplasm and provides structure to the nucleus. The nuclear lamina lies between the inner and outer nuclear membranes and is composed of intermediate filaments and associated proteins. Nuclear pore complexes are large protein structures that allow transport of molecules between the nucleus and cytoplasm.
Recommended
Nucleus
The document provides details about the structure and functions of the nucleus. It notes that the nucleus was discovered by Robert Brown in 1831 and is considered the control center of the cell. It contains nuclear membranes, nucleoplasm, chromatin reticulum, and nucleolus. The nuclear membrane contains pores that allow transport of molecules between the nucleus and cytoplasm. The nucleolus forms in the nucleolar organizer region and is involved in ribosome biogenesis. The main functions of the nucleus include controlling metabolism, synthesizing and processing RNA, and storing and assembling ribosomes.
Nucleus
The nucleus is the control center of the cell that contains DNA and controls its metabolic and hereditary activities. It is enclosed by a double nuclear membrane with nuclear pores that regulate transport. Inside the nucleus is nucleoplasm containing chromatin fibers that coil to form chromosomes during cell division. The nucleolus forms within the nucleus and is responsible for synthesizing ribosomes. The nucleus varies in shape, size, and number depending on the cell but is typically a single, spherical organelle located in the cell's center.
Nucleus
The nucleus is a double-membrane bound structure that contains a cell's genetic material. It is located in the center of eukaryotic cells and houses DNA in the form of chromatin and chromosomes. The nucleus regulates gene expression and cellular metabolism. It contains nucleoplasm, nuclear pores, chromatin, and a nucleolus. The nucleolus produces ribosomes and is involved in protein synthesis.
Nucleus
The nucleus is the control center of the cell, bounded by a double nuclear membrane. It contains DNA in the form of chromatin or condensed chromosomes, as well as the nucleolus where ribosomal RNA is produced. The nucleolus builds ribosomal subunits which exit through nuclear pores into the cytoplasm to form functional ribosomes for protein production. Ribosomes are structures composed of rRNA and proteins that exist freely in the cytoplasm or bound to the endoplasmic reticulum, where they synthesize proteins. The endoplasmic reticulum processes proteins and manufactures membranes throughout the cell. It includes rough ER where bound ribosomes synthesize proteins for export, and smooth ER which performs metabolic functions and membrane production. The Golgi apparatus finishes
Nucleus
The nucleus is a large membrane-bound organelle found at the center of eukaryotic cells that contains the cell's genetic material in the form of chromosomes. It directs the cell's activities and is involved in cellular reproduction. Key features include being visible under a light microscope due to its acidic nature, containing DNA, RNA, and the nucleolus which produces ribosomes. The nuclear envelope encloses the nucleus and contains pores that regulate material passing in and out.
Nucleus
The nucleus is a spherical organelle found in eukaryotic cells that is surrounded by a double membrane nuclear envelope. It contains the cell's genetic material and coordinates various cellular activities such as protein synthesis, cell growth, and DNA replication and transcription. The nucleus contains chromatin, which packages the DNA, as well as nucleoli that produce ribosomes for protein synthesis.
The nucleus
The nucleus is the control center of the cell that contains most of the cell's DNA. It directs all activities inside the cell like growth, metabolism, and cell division. The nucleus is enclosed by a double membrane nuclear envelope that contains nuclear pores to regulate what enters and exits. Inside the nucleus is chromatin containing DNA, as well as the nucleolus for producing ribosomes. The nuclear lamina lies beneath the inner nuclear membrane and provides structure.
Nuclear envelope
The nuclear envelope consists of two nuclear membranes, the nuclear lamina, and nuclear pore complexes. It separates the nucleus from the cytoplasm and provides structure to the nucleus. The nuclear lamina lies between the inner and outer nuclear membranes and is composed of intermediate filaments and associated proteins. Nuclear pore complexes are large protein structures that allow transport of molecules between the nucleus and cytoplasm.
Presentation on Nucleus
The document summarizes key parts and functions of the nucleus. The nucleus contains nuclear membrane, nucleoplasm, chromatin, and nucleolus. It is surrounded by a double membrane nuclear envelope that contains pores allowing transport between the nucleus and cytoplasm. The nucleus controls all cell functions and carries hereditary material. It was discovered in 1831 and is present in all eukaryotic cells except mature red blood cells and phloem cells.
Exploring the nucleus
Let's explore the nucleus, starting from the nuclear envelope to the molecular organization of chromatin. The presentation is suitable for undergraduate students and has been started from the basics to enable easy understanding. It covers details of nuclear envelope, nuclear pore complex, nucleolus as well as DNA packaging.
Nucleus
Presentation include Nucleus and its components like nuclear envelope, nucleolus, chromatin fibers, ultra structure of nucleus and its general functions.
Nucleus
The document discusses several key structures and functions of the cell including:
1. The nucleus contains heterochromatin and euchromatin, and is surrounded by a nuclear envelope and lamina. Lamin proteins make up the nuclear lamina.
2. Mitochondria have an outer and inner membrane, matrix, and DNA. They are thought to have originated from endosymbiotic bacteria.
3. Lysosomes contain digestive enzymes and break down materials through phagocytosis and autophagy.
4. Membranes form compartments and are made up of phospholipids, proteins, and cholesterol. Transport across membranes can occur through diffusion, channels, carriers or active transport.
Nucleus of eukaryote
The document discusses the discovery and components of the cell nucleus. It describes how Robert Brown first observed nuclei in plant cells and how others later established that cells only come from pre-existing cells. The main components of the nucleus are then outlined, including the nuclear envelope, nucleoplasm, nuclear pores, nuclear lamina, chromosomes, and nucleolus. The nuclear envelope forms a double membrane barrier with nuclear pores that regulate transport. The nuclear lamina provides structural support and anchors other structures. The nucleolus is responsible for producing ribosomes.
Nucleus Structure
The document discusses the key components and structure of the nucleus. It notes that the nucleus was discovered in 1831 and is located at the center of most cells, where it controls cell activities and houses genetic material. The nucleus contains a double-layered nuclear envelope that encloses chromosomes, nucleolus, and nucleoplasm. Chromosomes contain DNA that provides genetic instructions, while the nucleolus produces ribosomes and the nucleoplasm is a liquid found within the nuclear envelope.
CELL NUCLEUS
1) The document discusses the discovery of the cell nucleus, beginning with van Leeuwenhoek's 1719 depiction of cells and nuclei. Robert Brown introduced the terms "areola" and "nucleus" for structures in plant cells.
2) The nucleus is the control center of the cell, containing most of its genetic material. Its primary functions are storing genetic information, protein synthesis, housing the nucleolus for ribosome production, and transporting regulatory factors and energy.
3) The nucleus is composed of a nuclear envelope, nucleoplasm, nuclear pores, nuclear lamina, chromosomes, and nucleolus. The nucleolus synthesizes rRNA and assembles ribosomes.
Nucleus sk
The nucleus is a membrane-bound organelle that houses the cell's genome and controls gene expression. It contains DNA, which is replicated, transcribed into RNA, and processed. The nuclear envelope, made of two membranes, regulates transport of molecules into and out of the nucleus through nuclear pores. Inside the nucleus, DNA is organized into chromatin and packaged into chromosomes. The nucleolus forms around DNA that encodes ribosomal RNA and is the site of ribosome biogenesis.
Nucleus
The nucleus is a membrane-bound organelle that houses the genetic material in eukaryotic cells. It was discovered in 1831 and named by Robert Brown. The nucleus stores DNA and RNA, enables protein synthesis, and houses the nucleolus where ribosomes are produced. It occupies about 10% of the cell volume and is surrounded by a double membrane with nuclear pores that regulate transport. The nuclear lamina provides structure and chromatin contains the genome. Within the nucleus, the nucleolus is the site of ribosome biogenesis through rRNA transcription and processing.
Nucleus-the heart of the cell-cellular organelles
In cell biology, the nucleus is a membrane-bound organelle found in eukaryotic cells.
The nucleus is found in all the eukaryotic cells of the plants and animals.
here u will find every detail of nucleus.
for more details ,visit @biOlOgy BINGE-insight learning (youtube channel)
The cell nucleus
The nucleus is a spherical organelle found in eukaryotic cells that was first discovered by Leeuwenhoek and described in more detail by Robert Brown. It accounts for about 10% of the cell's volume and ranges from 2-5 micrometers in diameter. The nucleus contains genetic material, is surrounded by a double membrane with nuclear pores, and acts as the control center of the cell by storing hereditary material and producing ribosomes and RNA.
Nucleus – morphology & function
This document discusses the morphology and function of the nucleus. It describes the key components of the nucleus including the nuclear envelope, nuclear pores, nucleolus, and chromatin. It explains that the nuclear envelope contains a double membrane with pores that allow transport of molecules. The nucleolus is the site of ribosome biogenesis. Chromatin is made up of DNA and proteins including histones that package the DNA. The document also provides brief descriptions of nuclear DNA and mitochondrial DNA, noting differences in their structure and content.
Cell nucleus
The nucleus is a membrane-bound organelle found in eukaryotic cells that stores the cell's DNA and coordinates its activities. It contains chromatin, which packages DNA and proteins, the nucleolus for ribosome assembly, and a nuclear envelope consisting of two membranes separated by a perinuclear space. Chromatin exists in two forms - euchromatin which is loosely packed for gene expression, and heterochromatin which is tightly packed. The nucleus controls heredity and protein synthesis.
Cell Nucleus
The document discusses the nucleus, including its history, composition, functions, and recent discoveries. It was first discovered by Leeuwenhoek and later described in more detail by Robert Brown. The nucleus is a membrane-bound organelle found in eukaryotic cells that contains DNA and regulates cellular activity through gene expression. It is composed of a double membrane, nuclear pores, chromatin, nucleolus, and other subnuclear bodies. The nucleus plays important roles in gene expression, RNA synthesis, and providing structural support through its lamina. Recent research has linked mutations in lamin genes to premature aging disorders and identified proteins involved in cancer amplification and RNA interference.
Nucleus
The document is a report submitted by Sami ur rehman to Dr. Mohammad Saeed on November 11, 2013 about the structure and function of the nucleus. It discusses the nucleus, nuclear envelope, nuclear components including nucleoplasm and RNA/protein complexes, nucleolus, organization of DNA in chromosomes, replication of DNA including semi-conservative replication and replication forks, enzymes involved in DNA replication, synthesis of Okazaki fragments, transcription in prokaryotes and eukaryotes, different types of RNA, and RNA processing in eukaryotes including mRNA modification and intron removal.
Functions of nucleus
The nucleus has several key functions and structures that allow it to control the cell. The nuclear membrane separates the nuclear material from the cytoplasm and regulates what passes in and out through nuclear pores. Within the nucleus are nucleoli, which produce ribosomes, and chromosomes, which contain DNA and genes that control cell activities and inheritance.
Nucleus Ppt
The nucleus was discovered in 1831 and is the controlling center of the cell. It usually located in the center and contains the nucleolus, nucleoplasm, and chromatin material. The nuclear membrane separates the nucleus from the cytoplasm. The nucleolus is rich in protein and RNA, and chromatin contains DNA which carries genetic information. The nucleus controls cell activities and metabolism by regulating enzyme synthesis.
Nucleus
The document discusses the cell nucleus and its components. Key points include:
- The nucleus contains DNA and directs cell functions and protein production through transcription and RNA processing.
- It is surrounded by a double membrane with nuclear pores that regulate transport between the nucleus and cytoplasm.
- The nucleus contains chromatin (DNA and proteins) and the nucleolus, which is the site of ribosomal RNA transcription and ribosome assembly.
- DNA replication and cell division are regulated by the nucleus.
The cell nucleus
The nucleus is a membrane-bound organelle that controls all cell activity. It contains the cell's genetic material in the form of DNA and is the site of DNA replication and transcription. The nucleus is enclosed by a nuclear envelope containing nuclear pores that regulate movement of molecules between the nucleus and cytoplasm. Chromatin in the nucleus packages DNA and participates in gene expression. The nucleolus forms within the nucleus and produces ribosomes.
Nucleus
The nucleus is a membrane-bound organelle found in eukaryotic cells that was discovered in 1831. It contains the cell's genetic material and plays a key role in functions like DNA replication and protein synthesis. The nucleus has a double membrane structure and contains chromatin with DNA and histone proteins, as well as the nucleolus where ribosome biogenesis occurs. Transport of molecules into and out of the nucleus occurs through nuclear pore complexes in the membrane.
Nucleus & Endoplasmic reticulum
The document is a presentation on the nucleus and endoplasmic reticulum. It begins with background on the discovery of the nucleus by Leeuwenhoek and others. It then defines the nucleus as the control center of the cell that contains most of the cell's genetic material. It describes the main characteristics, size, shape, and ultrastructure of the nucleus, including the nuclear envelope, pores, lamina, chromosomes, nucleolus, and other components. It also summarizes the functions of the nucleus and endoplasmic reticulum, who discovered the ER, its definition, structure including cisternae, tubules and vesicles, types (rough and smooth ER), and functions in protein transport and synthesis.
Structure of Nucleus 1.pptx
The document summarizes key components and structures of the cell nucleus. It describes the nuclear envelope, nuclear pores, nucleolus, chromatin, and nuclear matrix. The nuclear envelope is a double membrane with nuclear pores that regulate transport. Underlying the inner nuclear membrane is the nuclear lamina providing structural support. The nucleolus is the site of ribosome biogenesis where rRNA is transcribed and assembled into ribosomal subunits. Chromatin and the nuclear matrix provide organization to the genetic material within the nucleoplasm.
More Related Content
What's hot
Presentation on Nucleus
The document summarizes key parts and functions of the nucleus. The nucleus contains nuclear membrane, nucleoplasm, chromatin, and nucleolus. It is surrounded by a double membrane nuclear envelope that contains pores allowing transport between the nucleus and cytoplasm. The nucleus controls all cell functions and carries hereditary material. It was discovered in 1831 and is present in all eukaryotic cells except mature red blood cells and phloem cells.
Exploring the nucleus
Let's explore the nucleus, starting from the nuclear envelope to the molecular organization of chromatin. The presentation is suitable for undergraduate students and has been started from the basics to enable easy understanding. It covers details of nuclear envelope, nuclear pore complex, nucleolus as well as DNA packaging.
Nucleus
Presentation include Nucleus and its components like nuclear envelope, nucleolus, chromatin fibers, ultra structure of nucleus and its general functions.
Nucleus
The document discusses several key structures and functions of the cell including:
1. The nucleus contains heterochromatin and euchromatin, and is surrounded by a nuclear envelope and lamina. Lamin proteins make up the nuclear lamina.
2. Mitochondria have an outer and inner membrane, matrix, and DNA. They are thought to have originated from endosymbiotic bacteria.
3. Lysosomes contain digestive enzymes and break down materials through phagocytosis and autophagy.
4. Membranes form compartments and are made up of phospholipids, proteins, and cholesterol. Transport across membranes can occur through diffusion, channels, carriers or active transport.
Nucleus of eukaryote
The document discusses the discovery and components of the cell nucleus. It describes how Robert Brown first observed nuclei in plant cells and how others later established that cells only come from pre-existing cells. The main components of the nucleus are then outlined, including the nuclear envelope, nucleoplasm, nuclear pores, nuclear lamina, chromosomes, and nucleolus. The nuclear envelope forms a double membrane barrier with nuclear pores that regulate transport. The nuclear lamina provides structural support and anchors other structures. The nucleolus is responsible for producing ribosomes.
Nucleus Structure
The document discusses the key components and structure of the nucleus. It notes that the nucleus was discovered in 1831 and is located at the center of most cells, where it controls cell activities and houses genetic material. The nucleus contains a double-layered nuclear envelope that encloses chromosomes, nucleolus, and nucleoplasm. Chromosomes contain DNA that provides genetic instructions, while the nucleolus produces ribosomes and the nucleoplasm is a liquid found within the nuclear envelope.
CELL NUCLEUS
1) The document discusses the discovery of the cell nucleus, beginning with van Leeuwenhoek's 1719 depiction of cells and nuclei. Robert Brown introduced the terms "areola" and "nucleus" for structures in plant cells.
2) The nucleus is the control center of the cell, containing most of its genetic material. Its primary functions are storing genetic information, protein synthesis, housing the nucleolus for ribosome production, and transporting regulatory factors and energy.
3) The nucleus is composed of a nuclear envelope, nucleoplasm, nuclear pores, nuclear lamina, chromosomes, and nucleolus. The nucleolus synthesizes rRNA and assembles ribosomes.
Nucleus sk
The nucleus is a membrane-bound organelle that houses the cell's genome and controls gene expression. It contains DNA, which is replicated, transcribed into RNA, and processed. The nuclear envelope, made of two membranes, regulates transport of molecules into and out of the nucleus through nuclear pores. Inside the nucleus, DNA is organized into chromatin and packaged into chromosomes. The nucleolus forms around DNA that encodes ribosomal RNA and is the site of ribosome biogenesis.
Nucleus
The nucleus is a membrane-bound organelle that houses the genetic material in eukaryotic cells. It was discovered in 1831 and named by Robert Brown. The nucleus stores DNA and RNA, enables protein synthesis, and houses the nucleolus where ribosomes are produced. It occupies about 10% of the cell volume and is surrounded by a double membrane with nuclear pores that regulate transport. The nuclear lamina provides structure and chromatin contains the genome. Within the nucleus, the nucleolus is the site of ribosome biogenesis through rRNA transcription and processing.
Nucleus-the heart of the cell-cellular organelles
In cell biology, the nucleus is a membrane-bound organelle found in eukaryotic cells.
The nucleus is found in all the eukaryotic cells of the plants and animals.
here u will find every detail of nucleus.
for more details ,visit @biOlOgy BINGE-insight learning (youtube channel)
The cell nucleus
The nucleus is a spherical organelle found in eukaryotic cells that was first discovered by Leeuwenhoek and described in more detail by Robert Brown. It accounts for about 10% of the cell's volume and ranges from 2-5 micrometers in diameter. The nucleus contains genetic material, is surrounded by a double membrane with nuclear pores, and acts as the control center of the cell by storing hereditary material and producing ribosomes and RNA.
Nucleus – morphology & function
This document discusses the morphology and function of the nucleus. It describes the key components of the nucleus including the nuclear envelope, nuclear pores, nucleolus, and chromatin. It explains that the nuclear envelope contains a double membrane with pores that allow transport of molecules. The nucleolus is the site of ribosome biogenesis. Chromatin is made up of DNA and proteins including histones that package the DNA. The document also provides brief descriptions of nuclear DNA and mitochondrial DNA, noting differences in their structure and content.
Cell nucleus
The nucleus is a membrane-bound organelle found in eukaryotic cells that stores the cell's DNA and coordinates its activities. It contains chromatin, which packages DNA and proteins, the nucleolus for ribosome assembly, and a nuclear envelope consisting of two membranes separated by a perinuclear space. Chromatin exists in two forms - euchromatin which is loosely packed for gene expression, and heterochromatin which is tightly packed. The nucleus controls heredity and protein synthesis.
Cell Nucleus
The document discusses the nucleus, including its history, composition, functions, and recent discoveries. It was first discovered by Leeuwenhoek and later described in more detail by Robert Brown. The nucleus is a membrane-bound organelle found in eukaryotic cells that contains DNA and regulates cellular activity through gene expression. It is composed of a double membrane, nuclear pores, chromatin, nucleolus, and other subnuclear bodies. The nucleus plays important roles in gene expression, RNA synthesis, and providing structural support through its lamina. Recent research has linked mutations in lamin genes to premature aging disorders and identified proteins involved in cancer amplification and RNA interference.
Nucleus
The document is a report submitted by Sami ur rehman to Dr. Mohammad Saeed on November 11, 2013 about the structure and function of the nucleus. It discusses the nucleus, nuclear envelope, nuclear components including nucleoplasm and RNA/protein complexes, nucleolus, organization of DNA in chromosomes, replication of DNA including semi-conservative replication and replication forks, enzymes involved in DNA replication, synthesis of Okazaki fragments, transcription in prokaryotes and eukaryotes, different types of RNA, and RNA processing in eukaryotes including mRNA modification and intron removal.
Functions of nucleus
The nucleus has several key functions and structures that allow it to control the cell. The nuclear membrane separates the nuclear material from the cytoplasm and regulates what passes in and out through nuclear pores. Within the nucleus are nucleoli, which produce ribosomes, and chromosomes, which contain DNA and genes that control cell activities and inheritance.
Nucleus Ppt
The nucleus was discovered in 1831 and is the controlling center of the cell. It usually located in the center and contains the nucleolus, nucleoplasm, and chromatin material. The nuclear membrane separates the nucleus from the cytoplasm. The nucleolus is rich in protein and RNA, and chromatin contains DNA which carries genetic information. The nucleus controls cell activities and metabolism by regulating enzyme synthesis.
Nucleus
The document discusses the cell nucleus and its components. Key points include:
- The nucleus contains DNA and directs cell functions and protein production through transcription and RNA processing.
- It is surrounded by a double membrane with nuclear pores that regulate transport between the nucleus and cytoplasm.
- The nucleus contains chromatin (DNA and proteins) and the nucleolus, which is the site of ribosomal RNA transcription and ribosome assembly.
- DNA replication and cell division are regulated by the nucleus.
The cell nucleus
The nucleus is a membrane-bound organelle that controls all cell activity. It contains the cell's genetic material in the form of DNA and is the site of DNA replication and transcription. The nucleus is enclosed by a nuclear envelope containing nuclear pores that regulate movement of molecules between the nucleus and cytoplasm. Chromatin in the nucleus packages DNA and participates in gene expression. The nucleolus forms within the nucleus and produces ribosomes.
Nucleus
The nucleus is a membrane-bound organelle found in eukaryotic cells that was discovered in 1831. It contains the cell's genetic material and plays a key role in functions like DNA replication and protein synthesis. The nucleus has a double membrane structure and contains chromatin with DNA and histone proteins, as well as the nucleolus where ribosome biogenesis occurs. Transport of molecules into and out of the nucleus occurs through nuclear pore complexes in the membrane.
What's hot (20)
Similar to Nucleus
Nucleus & Endoplasmic reticulum
The document is a presentation on the nucleus and endoplasmic reticulum. It begins with background on the discovery of the nucleus by Leeuwenhoek and others. It then defines the nucleus as the control center of the cell that contains most of the cell's genetic material. It describes the main characteristics, size, shape, and ultrastructure of the nucleus, including the nuclear envelope, pores, lamina, chromosomes, nucleolus, and other components. It also summarizes the functions of the nucleus and endoplasmic reticulum, who discovered the ER, its definition, structure including cisternae, tubules and vesicles, types (rough and smooth ER), and functions in protein transport and synthesis.
Structure of Nucleus 1.pptx
The document summarizes key components and structures of the cell nucleus. It describes the nuclear envelope, nuclear pores, nucleolus, chromatin, and nuclear matrix. The nuclear envelope is a double membrane with nuclear pores that regulate transport. Underlying the inner nuclear membrane is the nuclear lamina providing structural support. The nucleolus is the site of ribosome biogenesis where rRNA is transcribed and assembled into ribosomal subunits. Chromatin and the nuclear matrix provide organization to the genetic material within the nucleoplasm.
the_nucleus.pptx
The nucleus is a membrane-bound organelle that houses the cell's DNA. It contains several sub-compartments including the nucleolus, which is the site of ribosome biogenesis. The nuclear envelope, composed of two lipid bilayers separated by perinuclear space, encloses the nucleus and regulates transport between the nucleus and cytoplasm through nuclear pore complexes. Within the nucleus, DNA is organized into either loosely packed euchromatin or tightly packed heterochromatin. The nucleolus forms around clusters of rRNA genes and is the site of rRNA transcription and ribosome subunit assembly.
Cellular organelles nucleus, mitochondria & plastids
The document discusses cellular organelles, focusing on the nucleus and mitochondria. It provides detailed information on the structure and functions of the nucleus, including that it is bounded by a double membrane and contains genetic material. It also describes the inner structures of the nucleus like the nucleolus and nuclear pores. Additionally, it discusses how the nucleus changes during cell division. For mitochondria, it notes that they are the powerhouses of the cell, generating energy through cellular respiration and having an inner membrane with folds called cristae to enhance this process.
CELL ANATOMY AND PHYSIOLOGY SLIDESHARE
1. Cells are the basic structural and functional units of life. All cells arise from existing cells through cell division.
2. Cells contain a nucleus surrounded by cytoplasm, which includes organelles that perform specific functions. The plasma membrane encloses the cell and regulates what enters and exits.
3. The nucleus houses genetic material and controls cellular activities like protein synthesis. It contains chromatin, which packages DNA, and the nucleolus, where ribosomes are produced.
Nucleus.doc
The nucleus is a spherical organelle found in eukaryotic cells that controls cell functions and contains DNA. It is surrounded by a double membrane and contains chromatin, nucleoplasm, and one or more nucleoli. The nucleus controls gene expression and protein synthesis, regulates cell growth and division, and maintains hereditary material. It allows for the exchange of molecules with the cytoplasm through nuclear pores in its membrane. The nucleus contains the cell's genetic material and plays a key role in controlling cell activities and functions.
The Nucleus
structure, functions and diseases caused by nuclear abnormality. deals about the physiological complications and therapeutic approach.
Ultrastructure of Nucleus and functions
The document summarizes the structure and functions of the nucleus. The nuclear structure contains a nuclear membrane, nucleoplasm, nucleolus, and chromosomes. The nuclear membrane encloses the nucleus and regulates molecular flow through nuclear pores. Nucleoplasm is the gel-like material that cushions and transports molecules within the nucleus. The nucleolus synthesizes ribosomes. Chromosomes contain DNA and organize into chromatin during cell division. Main functions of the nucleus include controlling gene expression, DNA replication, protein synthesis, cell growth, and differentiation.
Earth and Life Science Grade 11
Please...
If you want to copy this slideshare.
Ask first a permission to copy or download this Slide..
Membrane bounded organelles
The document summarizes key information about the cell nucleus:
1. The nucleus was the first organelle discovered and contains most of the cell's genetic material. It maintains the integrity of genes and controls the cell.
2. The nuclear envelope separates the nucleoplasm from the cytoplasm. Nuclear pores allow transport between the two compartments.
3. Chromatin within the nucleus organizes the DNA into chromosomes. The nucleolus synthesizes rRNA to assemble ribosomes.
Nucleus
The nucleus contains the cell's hereditary material and controls its growth and division. It is surrounded by a double membrane and contains chromatin, the nucleolus, and nucleoplasm. The nuclear envelope separates the nucleus from the cytoplasm while nuclear pores allow transport of molecules. The nucleus stores DNA and RNA, transcribes DNA to mRNA, and produces ribosomes, regulating gene expression and cell functions.
The Cell........................................................................
The document summarizes key aspects of cell biology. It begins by outlining cell theory and distinguishing between eukaryotic and prokaryotic cells. It then describes several organelles found in eukaryotic cells including the nucleus, mitochondria, lysosomes, endoplasmic reticulum, Golgi apparatus, peroxisomes, and cytoskeleton. It also discusses tissue formation, classification of prokaryotic cells, and the structure and function of bacterial and viral cells.
grade 8 Cell – the basic unit of life.pptx
Robert Hooke discovered cells in 1665 when observing a dead cork cell under a microscope. Key discoveries followed including Anton van Leeuwenhoek observing living cells in 1674 and Matthias Schleiden and Theodor Schwann establishing the cell theory in 1838-1839 which stated that all living things are composed of cells, cells arise from pre-existing cells, and cells contain the same basic components. The cell is now recognized as the basic unit of structure and function in all living organisms.
Nucleusppt
The nucleus is a membrane-enclosed organelle found in eukaryotic cells that contains the cell's genetic material. It is surrounded by a double nuclear envelope that separates the nucleus from the cytoplasm and contains nuclear pores to regulate the transport of molecules. Within the nucleus are chromosomes made of DNA and proteins that control gene expression and cellular activities.
The cell
The document discusses the cell, which is the basic structural and functional unit of life. It describes various types of cells and their structures, including the plasma membrane, nucleus, cytoplasm, organelles like mitochondria, lysosomes, and peroxisomes. It explains the roles of these structures in transport, synthesis of proteins and other cellular processes. The document provides details on cellular respiration and how mitochondria generate energy in the form of ATP through an electron transport chain.
Cell
Here are the answers to the questions:
- Golgi apparatus serves as a primary packaging area for molecules that will be distributed throughout the cell.
- Ribosomes
- Spindle fibers
- Nerve cells
- Lysosomes
- Cell
- Smooth endoplasmic reticulum
1._Cell_structure_function_1.ppt
The document discusses the structure and function of cells. It defines a cell as the smallest unit capable of performing life functions. It outlines cell theory, which states that all living things are made of cells, cells are the basic units of life, and new cells are produced from existing cells. The document describes the main parts of the cell including the cell membrane, nucleus, cytoplasm, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, and ribosomes. It explains the structure and functions of these organelles in supporting life processes within the cell.
L5-6. Cellular organization.ppt
Cells are the basic unit of life and come in two main types - prokaryotic and eukaryotic. Eukaryotic cells contain membrane-bound organelles and compartments that allow specialization of function. The key organelles of animal cells include the nucleus, which houses the genetic material, and membrane-bound structures like the endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes, and peroxisomes that carry out specialized functions. Non-membrane bound structures include ribosomes for protein synthesis and the cytoskeleton which maintains cell shape.
Human-Physiology-Cell-Structure-function-I-lecture-31.July_.2012.ppt
1. The document discusses cell structure and function, including the history of cell theory and key developments.
2. It describes the basic components of prokaryotic and eukaryotic cells, including the plasma membrane, nucleus, cytoplasm, and organelles.
3. The endomembrane system is described, including how it modifies proteins and lipids and transports them within the cell.
Human Cell physiology 1 St YEAR B nursing
Mitochondria are the powerhouses of the cell. They have an outer and inner membrane, and produce energy in the form of ATP through oxidative phosphorylation. Mitochondria contain their own DNA and can self-replicate. They are essential for cellular functions and processes that require energy. The nucleus is the control center of the cell and contains the cell's genetic material in the form of DNA. It is surrounded by a double membrane and contains nucleoplasm and chromatin. Ribosomes are organelles that synthesize proteins using instructions from mRNA. The cytoskeleton, composed of microtubules, intermediate filaments and microfilaments, helps maintain cell shape and enables cell movement. ATP is used to power active transport across membranes and various
Similar to Nucleus (20)
Cellular organelles nucleus, mitochondria & plastids
Cellular organelles nucleus, mitochondria & plastids
The Cell........................................................................
The Cell........................................................................
Human-Physiology-Cell-Structure-function-I-lecture-31.July_.2012.ppt
Human-Physiology-Cell-Structure-function-I-lecture-31.July_.2012.ppt
More from Harshraj Shinde
Mutagen
Mutagens are agents that cause mutations in genetic material. The first mutagens identified were carcinogens like x-rays and UV radiation in the 1920s. Mutagens can cause DNA damage through direct interaction, formation of reactive molecules, or incorporation into DNA. This damage may lead to mutations, chromosomal abnormalities, and potentially cancer. Common types of mutagens include physical agents, chemicals that react with DNA, base analogs, intercalating agents, metals, and some viruses and bacteria. Tests like the Ames test are used to identify potential mutagenic compounds.
Gene interaction
This document discusses different types of gene interaction:
1. It defines gene interaction as two or more genes affecting the expression of a single character in an organism.
2. It classifies gene interactions into allelic/non-epistatic interactions which follow classical Mendelian ratios, and non-allelic/epistatic interactions where genes on the same or different chromosomes interact.
3. Epistatic genes suppress or mask the expression of other genes, called hypostatic genes. Epistatic gene interactions are further classified into six types based on how the genes influence each other.
Lethal allele
This document discusses lethal alleles, which are alleles that cause death in an organism. It defines lethal alleles and provides a brief history of their discovery through early studies of coat color inheritance in mice. The document outlines four types of lethal alleles: early onset alleles that cause death early in life, late onset alleles that cause death late in life, conditional alleles that only cause death under certain environmental conditions, and semi-lethal alleles that only kill some individuals, not all. It provides the example of the Y gene in mice, which causes a yellow coat color but is lethal when present in the homozygous dominant state (YY), though not in the heterozygous or recessive states.
Linkage
- Linkage refers to the tendency of genes located near each other on the same chromosome to be inherited together during meiosis. This is because genes located close together on a chromosome move together to the same pole during cell division.
- There are different types of linkage based on whether crossing over occurs, the genes involved, and the chromosomes. Linkage can be complete or incomplete depending on the presence or absence of crossing over. It can involve dominant or recessive alleles.
- Linkage is detected through test crosses, where deviations from expected Mendelian ratios indicate genes are linked. The strength of linkage depends on distance between genes, with closer genes showing stronger linkage.
Multiple allele
Multiple alleles occur when there are more than two allelic forms of a given gene in a species. Examples include blood groups in humans and coat color in mice. The ABO blood group gene in humans has three alleles - IA, IB, and i - which determine blood types A, B, AB, and O. Coat color in mice is also determined by multiple alleles at a single gene locus, with alleles for black, brown, agouti, gray, and albino hair colors exhibiting a dominance hierarchy. Multiple alleles always influence the same trait and occupy the same locus on chromosomes, with no crossing over between member alleles of a multiple allelic series.
Pleiotropism
One gene can influence multiple unrelated traits through pleiotropy. Pleiotropy occurs when a single gene affects multiple phenotypic traits through its effect on metabolic pathways. For example, phenylketonuria is caused by a mutation in the gene that codes for the enzyme phenylalanine hydroxylase. This single gene mutation can cause both mental retardation and reduced hair and skin pigmentation.
Iucn red list
The IUCN Red List is the world's most comprehensive inventory of the global conservation status of species. It uses a set of criteria to evaluate the extinction risk of thousands of species and publishes its assessments. Major goals are to convey the urgency of conservation and provide information to guide actions to conserve biological diversity. Key findings from assessments over the years have shown increasing numbers of threatened species, including many moving into critically endangered categories. Major taxonomic groups like corals, amphibians, and mammals are particularly at risk.
Photosynthesis
Photosynthesis is the process by which plants, algae and some bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of ATP and NADPH. It takes place in two stages - the light-dependent reactions that take place in the thylakoid membranes of the chloroplast and produce ATP and NADPH, and the light-independent reactions known as the Calvin cycle that uses these products to capture and reduce carbon from carbon dioxide into organic compounds. C4 and CAM plants have evolved specialized mechanisms to concentrate carbon dioxide around the enzyme RuBisCO to increase photosynthetic efficiency.
Restriction enzymes (mc qs)
The discovery of restriction enzymes by Nathan, Arber and Smith in the 1970s led to the development of recombinant DNA technology. Restriction enzymes are molecular scissors that cut DNA at specific recognition sites. Type II restriction enzymes cut within their recognition sites and generate sticky ends, which allow for cutting and joining of DNA from different sources. This key discovery of restriction enzymes that enabled cutting and joining of DNA laid the foundation for genetic engineering.
Vacuoles
Vacuoles are large fluid-filled vesicles that occupy 30-90% of the volume in most plant cells. They are separated from the cytoplasm by a single membrane called the tonoplast. Vacuoles store a variety of substances like sugars, salts, acids, pigments, and sometimes rubber. They also contain hydrolytic enzymes and act as a storage site for both nutrients and waste products. Vacuoles help control turgor pressure and cell shape in plants.
Viruses
Viruses are submicroscopic infectious agents that lack cellular organization and require a host cell to replicate. They contain either DNA or RNA surrounded by a protein coat called a capsid. Viruses have different structures depending on their symmetry - icosahedral, helical, or complex. They multiply through lytic or lysogenic cycles, depending on if they cause host cell lysis or integrate into the host genome. Important plant, animal, and bacterial viruses are described along with their structures and life cycles. Viruses, viroids, and prions are compared in terms of their genetic material and ability to infect hosts.
Biochemistry mc qs
The document contains questions and answers related to biochemistry, techniques in biochemistry, animal biotechnology, and bioinformatics. Some key topics covered include the first person to introduce the term biochemistry, the first protein sequenced, discoveries related to nucleic acids and viruses, techniques like paper chromatography, electrophoresis, and ultracentrifugation, molecular farming in animal biotechnology, early bioinformatics databases, tools for sequence alignment and analysis, and relationships between genomics and drug identification.
Dna replication
DNA replication occurs through a semiconservative process where the parental DNA strands separate and act as templates for the synthesis of new complementary strands. Key experiments by Meselson and Stahl provided evidence for this semiconservative model. DNA polymerase, discovered by Arthur Kornberg in 1955, is the main enzyme that catalyzes DNA synthesis. It requires DNA templates, dNTPs, and magnesium ions to carry out the step-wise addition of nucleotides in the 5' to 3' direction to form new DNA strands.
Mol bio
The document discusses various topics in molecular biology including:
- The melting temperature of DNA ranges from 30-95% depending on the organism.
- UGA, UAG, and UAA are amber stop codons.
- Tryptophan and methionine are the amino acids that have a single codon.
- Removal of introns is involved in mRNA splicing.
Applied community nutrition
Applied community nutrition programs aim to improve nutritional status and overcome diseases. Key programs target preschoolers, school-aged children, and pregnant/lactating women. The Mid Day Meal Programme provides meals to schoolchildren to improve attendance and nutrition. The Balwadi Nutrition Programme provided preschoolers with 300kcal and 10g protein daily. The Iodine Deficiency Disorder Control Programme eliminated iodine deficiency through iodized salt. Immunization programs prevent diseases like polio and tetanus. Supplementary Nutrition Programs provide extra food and growth monitoring to prevent undernutrition. Health Check-up programs monitor health and refer malnourished individuals for treatment. However, sustainability challenges like food poisoning incidents threaten
Malnutrition consequences, causes, prevention and control
Malnutrition can be caused by both under-nutrition and over-nutrition, resulting in nutritional disorders. Under-nutrition can cause protein-energy malnutrition, vitamin and mineral deficiencies, and specific deficiency diseases like beriberi, pellagra, rickets, and anemia. Over-nutrition can cause obesity. Malnutrition has wide-ranging consequences and is both caused by and exacerbates poverty. Prevention strategies include improving agricultural production, educating people, food fortification, genetic engineering of crops, and government assistance programs.
International aspects of the quality and safety of
This document summarizes the rules and regulations regarding genetically modified foods in India. It discusses:
1) The Rules of 1989 which govern GMOs and were established by the Ministry of Environment and Forests. This includes several competent authorities responsible for implementation.
2) The framework for safety assessment of GM foods, which follows a step-by-step process considering various factors like identity, composition, and effects of processing.
3) The general considerations for developing GM foods, which include characterizing the genetic modification and assessing possible toxicity, allergenicity, nutritional modifications, and unintended effects.
Enrichment and fortification
Food enrichment refers to adding micronutrients back to foods that were lost during processing to restore their original nutritional value. Food fortification deliberately increases a food's micronutrient content, whether or not those nutrients were originally present, in order to improve nutritional quality. There are four main methods of food fortification: biofortification, microbial/synthetic biology, commercial and industrial fortification, and home fortification. Common examples of fortified foods include milk with vitamin D, salt with iodine, and flour with folic acid. The purpose of food fortification is to improve nutritional quality, reduce nutritional disorders, and support body building and medical treatment.
Protease enzymes
This document discusses various proteolytic enzymes, including their sources and applications. It describes proteases such as papain from papaya, used as a meat tenderizer, and bromelain from pineapple, also used for meat tenderizing. Pepsin from the stomach aids protein digestion. Rennin produces curdling in milk. Trypsin and cathepsins break down proteins, with trypsin used in cell culture and proteomics. These enzymes degrade proteins through hydrolysis of peptide bonds.
Oxidoreductase
Oxidoreductases are enzymes that catalyze the transfer of electrons from one molecule to another. This document discusses several oxidoreductase enzymes - glucose oxidase (GOx), catalase, polyphenol oxidase (PPO), and L-ascorbate oxidase. It provides details on their reactions, sources, applications, and history. GOx oxidizes glucose to produce hydrogen peroxide. Catalase decomposes hydrogen peroxide. PPO causes browning reactions in fruits. L-ascorbate oxidase acts in ascorbate metabolism.
More from Harshraj Shinde (20)
Malnutrition consequences, causes, prevention and control
Malnutrition consequences, causes, prevention and control
International aspects of the quality and safety of
International aspects of the quality and safety of
Recently uploaded
Temple of Asclepius in Thrace. Excavation results
The temple and the sanctuary around were dedicated to Asklepios Zmidrenus. This name has been known since 1875 when an inscription dedicated to him was discovered in Rome. The inscription is dated in 227 AD and was left by soldiers originating from the city of Philippopolis (modern Plovdiv).
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
How to deliver Powerpoint Presentations.pptx
"How to make and deliver dynamic presentations by making it more interactive to captivate your audience attention"
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
How to Setup Warehouse & Location in Odoo 17 Inventory
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Aberdeen
BBR 2024 Summer Sessions Interview Training
Qualitative research interview training by Professor Katrina Pritchard and Dr Helen Williams
How to Make a Field Mandatory in Odoo 17
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
Gender and Mental Health - Counselling and Family Therapy Applications and In...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
Constructing Your Course Container for Effective Communication
Communicating effectively and consistently with students can help them feel at ease during their learning experience and provide the instructor with a communication trail to track the course's progress. This workshop will take you through constructing an engaging course container to facilitate effective communication.
Advanced Java[Extra Concepts, Not Difficult].docx
This is part 2 of my Java Learning Journey. This contains Hashing, ArrayList, LinkedList, Date and Time Classes, Calendar Class and more.
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingExcellence Foundation for South Sudan
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.Recently uploaded (20)
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptx
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
Gender and Mental Health - Counselling and Family Therapy Applications and In...
Gender and Mental Health - Counselling and Family Therapy Applications and In...
Constructing Your Course Container for Effective Communication
Constructing Your Course Container for Effective Communication
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Nucleus
- 1. Cell-biology
- 2. History of Cell biology o Mid 1600s – Anton van Leeuwenhoek • Improved microscope, observed many living cells o Mid 1600s – Robert Hooke • Observed many cells including cork cells o 1850 – Rudolf Virchow • Proposed that all cells come from existing cells
- 3. The Cell Theory Fundamental idea of modern cell biology that includes these three principles: o All living organisms are composed of one or more cells o Cells are the basic unit of structure and organization of all living organisms o Cells arise only from previously existing cells, with cells passing copies of their genetic material on to their daughter cells
- 4. 4 -Nucleus -Cytoplasm -Nucleolus -Cytoskeleton -Cell membrane -Vacuole -Mitochondria -Chloroplast -Golgi Apparatus -Centrioles -Lysosomes -Ribosomes -Endoplasmic reticulum Cell organelles
- 5. Nucleus
- 6. The nuclear envelope Components: Two cellular membranes Barrier to ions, solutes, macromolecules Membranes fused to form pores Complex assemblies of proteins Outer membrane Ribosomes Continuous with RER
- 7. Nuclear pore o The pore is 100 nm in total diameter. o The nucleus of a typical mammalian cell has about 3000 to 4000 pores throughout its envelope o Proteins synthesized in the cytoplasm cross the nuclear envelop to initiate replication and transcription of genetic material o Similarly, mRNA, tRNA and ribosomal subunits built in the nucleus cross through the nuclear pores to the cytoplasm
- 8. o The nucleoplasm is a highly viscous liquid that surrounds the chromosomes and nucleoli o Many substances such as nucleotides (necessary for purposes such as the replication of DNA) and enzymes (which direct activities that take place in the nucleus) are dissolved in the nucleoplasm Nucleoplasm
- 9. Nucleolus The prominent structure in the nucleus is the nucleolus The nucleolus produces ribosomes, which move out of the nucleus and take positions on the rough endoplasmic reticulum where they are critical in protein synthesis
- 10. o Chromatin is the complex of DNA and protein (Histones) that makes up chromosomes o Each unreplicated chromosome contains a single continuous DNA molecule o Types of chromatin a) Euchromatin- is a lightly packed form of chromatin, rich in gene concentration, and is often under active transcription. b) Heterochromatin- is a tightly packed form of DNA which is inactive form of chromatin. Chromatin