Steps Of Mitosis
•Download as PPT, PDF•
0 likes•311 views
The document describes the stages of mitosis: prophase where the nuclear membrane breaks down and chromosomes condense; metaphase where chromosomes line up along the equator; anaphase where chromatids separate and are pulled to opposite sides by fibers attached to centrioles; telophase where two nuclei form and chromosomes unwind; and cytokinesis where the cytoplasm is split into two cells.
Report
Share
Report
Share
![[object Object]](https://image.slidesharecdn.com/stepsofmitosischris3rd-100327183208-phpapp01/85/Steps-Of-Mitosis-1-320.jpg)
![PROPHASE ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
Nucleus ppt
The nucleus is a membrane-bound organelle that contains the genetic material (DNA) of eukaryotic cells. It takes up about 10% of the cell volume and facilitates transcription and replication processes to maintain cell integrity. The nucleus contains nucleoplasm, nucleolus, chromosomes, and a phospholipid bilayer nuclear membrane with pores. It serves as the control center of the cell by synthesizing proteins and controlling traits and metabolism. Chromatin is the complex of DNA and proteins within the nucleus that allows for compaction of DNA.
The nucleus
The document discusses research using cryo-electron microscopes to study the nuclear pores in cell nuclei. Key findings include:
1) Researchers discovered a previously unknown "molecular gate" structure inside the nuclear pores that only allows certain molecules to pass through.
2) Nuclear pores are among the largest and most complex structures in the cell, comprising over 200 individual proteins arranged in a ring-like architecture.
3) The molecular gate structure's discovery may lead to new insights into disease treatment and discovery by better understanding how molecules pass through the nuclear pores.
Nucleus structure and nuclear pore complex
The nucleus is surrounded by a double membrane called the nuclear envelope. Underlying the inner nuclear membrane is the nuclear lamina, a fibrous network composed of lamin proteins that provides structural support. Nuclear pores embedded in the nuclear envelope selectively regulate the transport of molecules in and out of the nucleus. The nucleolus within the nucleus is the site of ribosome biogenesis and contains genes for ribosomal RNA. Mutations in lamin genes can cause premature aging diseases like Hutchinson-Gilford progeria syndrome.
The Nucleus
The document defines the cell nucleus and describes its structure. The nucleus is a membrane-bound organelle found in eukaryotic cells that controls the cell and contains most of its DNA. It has an outer and inner membrane that envelop the nucleoplasm, which contains chromatin, nucleoli, and nuclear pores. The nucleolus is in the center and produces ribosomes, while chromatin contains DNA instructions for the cell.
Junctions between cells
This document discusses different types of junctions that connect animal and plant cells. It describes four main types of junctions in animal cells: tight junctions, adherens junctions, gap junctions, and desmosomes. Tight junctions seal adjacent epithelial cells and control molecular passage between cells. Adherens junctions provide strong mechanical attachment between cells. Gap junctions allow small molecules and ions to pass between cells. Desmosomes hold epithelial cells tightly together. The document also discusses plasmodesmata, which connect plant cells and allow communication between them through extensions of their plasma membranes.
nuclear pore complex and function nucleus
The document discusses two recent studies on nuclear transport and its implications for medical research. The first study used high-speed atomic force microscopy to visualize the dynamics of nuclear pores in colon cancer cells at nanoscale resolution. It found that nuclear pore deformation may be involved in cancer cell death. The second study identified a potential way to prevent mRNA with disease-causing mutations from leaving the nucleus in motor neuron disease. Advances in understanding nuclear transport could lead to new treatment approaches for diseases like cancer and amyotrophic lateral sclerosis.
Tight junction & gene expression
Tight junctions play an important role in regulating gene expression and cell proliferation. Two key proteins, ZO-1 and ZO-2, shuttle between the tight junctions and the nucleus in proliferating cells. ZO-1 expression is higher in contact-inhibited cells and suppresses proliferation. ZO-2 localizes to nuclear speckles in proliferating cells to regulate pre-mRNA splicing. The nuclear transport of these proteins allows tight junctions to influence gene transcription and cell cycle progression.
cell_junctions
second part of general physiology
also subscribe our youtube channel :- Medic talks and our cell junction:- https://youtu.be/CohiNxQcLO4
Recommended
Nucleus ppt
The nucleus is a membrane-bound organelle that contains the genetic material (DNA) of eukaryotic cells. It takes up about 10% of the cell volume and facilitates transcription and replication processes to maintain cell integrity. The nucleus contains nucleoplasm, nucleolus, chromosomes, and a phospholipid bilayer nuclear membrane with pores. It serves as the control center of the cell by synthesizing proteins and controlling traits and metabolism. Chromatin is the complex of DNA and proteins within the nucleus that allows for compaction of DNA.
The nucleus
The document discusses research using cryo-electron microscopes to study the nuclear pores in cell nuclei. Key findings include:
1) Researchers discovered a previously unknown "molecular gate" structure inside the nuclear pores that only allows certain molecules to pass through.
2) Nuclear pores are among the largest and most complex structures in the cell, comprising over 200 individual proteins arranged in a ring-like architecture.
3) The molecular gate structure's discovery may lead to new insights into disease treatment and discovery by better understanding how molecules pass through the nuclear pores.
Nucleus structure and nuclear pore complex
The nucleus is surrounded by a double membrane called the nuclear envelope. Underlying the inner nuclear membrane is the nuclear lamina, a fibrous network composed of lamin proteins that provides structural support. Nuclear pores embedded in the nuclear envelope selectively regulate the transport of molecules in and out of the nucleus. The nucleolus within the nucleus is the site of ribosome biogenesis and contains genes for ribosomal RNA. Mutations in lamin genes can cause premature aging diseases like Hutchinson-Gilford progeria syndrome.
The Nucleus
The document defines the cell nucleus and describes its structure. The nucleus is a membrane-bound organelle found in eukaryotic cells that controls the cell and contains most of its DNA. It has an outer and inner membrane that envelop the nucleoplasm, which contains chromatin, nucleoli, and nuclear pores. The nucleolus is in the center and produces ribosomes, while chromatin contains DNA instructions for the cell.
Junctions between cells
This document discusses different types of junctions that connect animal and plant cells. It describes four main types of junctions in animal cells: tight junctions, adherens junctions, gap junctions, and desmosomes. Tight junctions seal adjacent epithelial cells and control molecular passage between cells. Adherens junctions provide strong mechanical attachment between cells. Gap junctions allow small molecules and ions to pass between cells. Desmosomes hold epithelial cells tightly together. The document also discusses plasmodesmata, which connect plant cells and allow communication between them through extensions of their plasma membranes.
nuclear pore complex and function nucleus
The document discusses two recent studies on nuclear transport and its implications for medical research. The first study used high-speed atomic force microscopy to visualize the dynamics of nuclear pores in colon cancer cells at nanoscale resolution. It found that nuclear pore deformation may be involved in cancer cell death. The second study identified a potential way to prevent mRNA with disease-causing mutations from leaving the nucleus in motor neuron disease. Advances in understanding nuclear transport could lead to new treatment approaches for diseases like cancer and amyotrophic lateral sclerosis.
Tight junction & gene expression
Tight junctions play an important role in regulating gene expression and cell proliferation. Two key proteins, ZO-1 and ZO-2, shuttle between the tight junctions and the nucleus in proliferating cells. ZO-1 expression is higher in contact-inhibited cells and suppresses proliferation. ZO-2 localizes to nuclear speckles in proliferating cells to regulate pre-mRNA splicing. The nuclear transport of these proteins allows tight junctions to influence gene transcription and cell cycle progression.
cell_junctions
second part of general physiology
also subscribe our youtube channel :- Medic talks and our cell junction:- https://youtu.be/CohiNxQcLO4
Nucleus
The nucleus is an organelle found in eukaryotic cells that houses the cell's genetic material. It was first observed by Anton van Leeuwenhoek in the 17th century and further described by Robert Brown in the 19th century. The nucleus is surrounded by a double membrane called the nuclear envelope and contains chromatin fibers, nucleoplasm, and one or more nucleoli. It controls cell functions and stores the cell's genetic information in the form of DNA.
Intracellular junction ppt
The document discusses the different types of intercellular junctions, including tight junctions, adherens junctions, desmosomes, hemidesmosomes, and gap junctions. It describes the structure and functions of each junction type and how mutations in the proteins that compose the junctions can cause various human diseases. Recent advances include the discovery of tunneling nanotubes that allow direct communication between distant cells.
Cell junctions and the extracellular matrix
1. Cells are organized into tissues through cell junctions that connect cells to each other and through the extracellular matrix that provides structural support.
2. The extracellular matrix is a network of proteins, glycosaminoglycans and proteoglycans secreted by cells that form specialized structures like connective tissue, the basal lamina, and cartilage.
3. Major components of the extracellular matrix include collagen, elastin, fibronectin, hyaluronan and aggrecan. These components differ in their physical properties and functions in providing structure, hydration and binding signaling molecules.
Unit1 ultra structure of cell
Differences between prokaryotic and Eukaryotic cell, cellular organelle structure and function, cytoskeleton and it's elements, cellular markers
Abnormalities 0f mitotis By KK Sahu Sir
INTRODUCTION
WHAT IS MITOSIS
PHASES OF CELL CYCLE AND MITOSIS
SOURCE & REASON OF ABNORMAL MITOSIS
EFFECTS OF ABNORMAL MITOSIS
ABNORMALITIES OF MITOSIS IN PLANTS
ABNORMALITIES OF MITOSIS IN ANIMALS & HUMAN BEINGS
FACTORS RESPONSIBLE FOR MITOTIC ABNORMALITY
ADVANTAGES & DISADVANTAGES OF ABNORMAL MITOSIS
CONCLUSION
REFERENCE
Abt seminor
Characterization of cell lines is important to identify their origin and genetic stability. Techniques used include karyotyping, DNA content analysis, and DNA hybridization. Cultured cells have low cell-cell interaction, cannot perform differentiated functions, and are influenced differently by hormones and nutrients than in vivo cells. They also lack the 3D architecture of in vivo cells and favor proliferation of unspecialized cells. Growth parameters like population doubling time, confluence, cell cycle time, cell density, contact inhibition, and saturation density are measured. Tissue typing identifies species of origin using chromosomal or isoenzyme analysis. Tissue and cell line identity can be determined by markers like differentiated products, enzymes, and filament proteins. Transformed
Nuclear pores
The nuclear pore complex regulates the passage of molecules between the nucleus and cytoplasm. It is comprised of several subunits that form a channel with a central pore. Surrounding the pore is a nonmembranous annulus with spoke-like structures. The pore wall contains columnar and lumenal subunits anchored by transmembrane proteins. Tiny fibrils extend from both sides in basket-like configurations, with different protein compositions on each side. Nuclear pores allow entry and exit of proteins and molecules to perform functions inside and outside the nucleus.
Cell junctions molecular biology of the cell - ncbi bookshelf
This document summarizes cell junctions, which occur at points of cell-cell and cell-matrix contact. It describes three types of cell junctions: occluding junctions that prevent molecules from leaking between cells; anchoring junctions that mechanically attach cells to each other or the extracellular matrix; and communicating junctions that allow signal passage between cells. The document focuses on tight junctions and septate junctions as examples of occluding junctions, describing their structure and role in forming a selective permeability barrier in epithelial cell sheets.
Plasmodesmata
Plasmodesmata are narrow strands of cytoplasm that connect adjacent plant cells and allow for transport of substances between cells. They were first observed under light microscopes in 1879 but required electron microscopes to confirm their nature as cytoplasmic strands. Plasmodesmata contain a plasma membrane-lined channel and a desmotubule made of tightly constricted endoplasmic reticulum. Substances move between cells through the region between the desmotubule and plasma membrane, called the cytoplasmic sleeve. Plasmodesmata are either primary, formed during cell division, or secondary, formed across existing cell walls.
Chromosomes
It is a powerpoint presentation that discusses about the lesson or topic: Chromosomes. It also talks about the definition, history and the concepts about Chromosomes
C &m ppt [autosaved]
it gives information about the nucleus which is the major cell component and its various parts like nuclear pores,nucleolus etc. it helps in the replication of DNA which contain genetic material.
Desmosomes & hemidesmosomes
Desmosomes and hemidesmosomes are cell junctions that connect adjacent cells or attach cells to the extracellular matrix. Desmosomes link the intermediate filaments of neighboring cells, forming strong bonds especially in tissues under mechanical stress like skin. They are composed of transmembrane proteins, plaque proteins, and intermediate filaments. Hemidesmosomes attach basal epithelial cells to the basement membrane. Loss of desmosome function can cause skin and mucous membrane fragility disorders like pemphigus.
The nuclear membrane
The nuclear membrane, also known as the nuclear envelope, is a double lipid bilayer that surrounds the genetic material and nucleolus in eukaryotic cells. It consists of an inner and outer nuclear membrane, with the space between called the perinuclear space. The nuclear membrane functions to compartmentalize the nuclear material, maintain the shape and stability of the nucleus, regulate the transport of substances into and out of the nucleus through nuclear pores, and facilitate communication between the nucleus and the cell.
Role of kinetochore in cell division
The kinetochore is a protein structure that assembles at the centromeric region of chromosomes during cell division. It interacts with microtubules from the mitotic spindle to help segregate replicated sister chromatids to opposite poles of the cell. The kinetochore is made up of an inner region that binds to centromeric DNA, and an outer region called the KMN network that interacts with microtubule plus ends. Precise attachment of kinetochore microtubules is regulated by the Aurora B kinase to ensure chromosomes are properly bi-oriented on the mitotic spindle before the onset of anaphase. Failure of kinetochore function can lead to chromosomal abnormalities.
Cell cycle regulation Basics
The cell cycle is the ordered series of events that leads to cell division into two daughter cells. It consists of four main phases: G1, S, G2, and M. Checkpoints ensure each step is completed before progression. Cyclins activate CDKs at specific phases - G1 cyclins activate G1 CDKs which promote DNA replication by phosphorylating Rb and activating E2Fs. S-phase CDKs activate DNA replication origins. Mitotic CDKs promote mitotic events like spindle formation and chromosome condensation. Completion of mitosis involves chromosome segregation and cyclin degradation to inactivate CDKs and allow cell division.
Nucleus of a cell
The document discusses the key parts of a cell's nucleus. It describes the nucleus as the cell's "CPU" that stores DNA and coordinates the cell's activities. The nucleus contains chromosomes that hold the cell's genetic information. Within the nucleus are the nucleolus, which manufactures ribosomes, and the nuclear envelope and pores, which regulate passage between the nucleus and cytoplasm. The nucleus controls critical cell functions like growth, metabolism, and reproduction.
Cell junctions
Cell junctions are structures that allow for long-term association between neighboring cells. The three main types are tight junctions, adhesive junctions, and gap junctions. Adhesive junctions such as desmosomes and adherens junctions link cells together and to the extracellular matrix. These junctions contain intracellular attachment proteins and transmembrane linker proteins that anchor actin filaments or intermediate filaments. Gap junctions allow direct communication between cells by forming channels between their plasma membranes.
Cell Cycle Review
The cell cycle consists of interphase where the cell grows and DNA replicates, followed by mitosis where the cell divides into two daughter cells. During interphase the cell performs its normal functions and DNA replication occurs preparing the cell for division. Mitosis then begins with prophase where the cell prepares its nucleus to divide, followed by metaphase where chromosomes line up in the center, anaphase where chromosomes split and move apart, and telophase where the cell forms two new nuclei. Cytokinesis then divides the cytoplasm creating two new daughter cells that enter back into interphase to repeat the cell cycle.
Cell biology
This document provides definitions and details about cell biology. It begins by defining cell biology and its history. It describes the origin of life and cells, including theories about abiogenesis and the endosymbiotic theory of the origin of eukaryotic cells. It discusses cell theory and the two main types of cells - prokaryotic and eukaryotic cells. Further, it provides information about key cellular structures like the cell membrane, nucleus, and their structure and functions. The document is a comprehensive overview of foundational concepts in cell biology.
Epithelial CELL JUNCTIONS /endodontic courses
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Chris houston
The document discusses different species of small cats. It provides classifications for jaguars and describes their family tree, which includes jaguars, bobcats, and house cats. Various cats are also described, such as cheetahs being the fastest land animal, able to reach speeds of 45 mph in 2.5 seconds. Jaguars are found in tropical rainforests and eat large prey like capybaras. Leopards have rosette spots covering their bodies while cheetahs have large singular spots. Small cats are found universally around the world.
Penguins
Penguins are mainly found in Antarctica but also live in Australia, Argentina, and Africa. They are carnivores that mainly eat fish. There are 18 known penguin species, with king and emperor penguins being the most common. Penguins range in height from 16 inches to 3.5 feet tall and can live up to 30 years in captivity. They are related to seabirds but cannot fly and instead use their wings to swim. Sea lions are a main predator of penguin populations.
More Related Content
What's hot
Nucleus
The nucleus is an organelle found in eukaryotic cells that houses the cell's genetic material. It was first observed by Anton van Leeuwenhoek in the 17th century and further described by Robert Brown in the 19th century. The nucleus is surrounded by a double membrane called the nuclear envelope and contains chromatin fibers, nucleoplasm, and one or more nucleoli. It controls cell functions and stores the cell's genetic information in the form of DNA.
Intracellular junction ppt
The document discusses the different types of intercellular junctions, including tight junctions, adherens junctions, desmosomes, hemidesmosomes, and gap junctions. It describes the structure and functions of each junction type and how mutations in the proteins that compose the junctions can cause various human diseases. Recent advances include the discovery of tunneling nanotubes that allow direct communication between distant cells.
Cell junctions and the extracellular matrix
1. Cells are organized into tissues through cell junctions that connect cells to each other and through the extracellular matrix that provides structural support.
2. The extracellular matrix is a network of proteins, glycosaminoglycans and proteoglycans secreted by cells that form specialized structures like connective tissue, the basal lamina, and cartilage.
3. Major components of the extracellular matrix include collagen, elastin, fibronectin, hyaluronan and aggrecan. These components differ in their physical properties and functions in providing structure, hydration and binding signaling molecules.
Unit1 ultra structure of cell
Differences between prokaryotic and Eukaryotic cell, cellular organelle structure and function, cytoskeleton and it's elements, cellular markers
Abnormalities 0f mitotis By KK Sahu Sir
INTRODUCTION
WHAT IS MITOSIS
PHASES OF CELL CYCLE AND MITOSIS
SOURCE & REASON OF ABNORMAL MITOSIS
EFFECTS OF ABNORMAL MITOSIS
ABNORMALITIES OF MITOSIS IN PLANTS
ABNORMALITIES OF MITOSIS IN ANIMALS & HUMAN BEINGS
FACTORS RESPONSIBLE FOR MITOTIC ABNORMALITY
ADVANTAGES & DISADVANTAGES OF ABNORMAL MITOSIS
CONCLUSION
REFERENCE
Abt seminor
Characterization of cell lines is important to identify their origin and genetic stability. Techniques used include karyotyping, DNA content analysis, and DNA hybridization. Cultured cells have low cell-cell interaction, cannot perform differentiated functions, and are influenced differently by hormones and nutrients than in vivo cells. They also lack the 3D architecture of in vivo cells and favor proliferation of unspecialized cells. Growth parameters like population doubling time, confluence, cell cycle time, cell density, contact inhibition, and saturation density are measured. Tissue typing identifies species of origin using chromosomal or isoenzyme analysis. Tissue and cell line identity can be determined by markers like differentiated products, enzymes, and filament proteins. Transformed
Nuclear pores
The nuclear pore complex regulates the passage of molecules between the nucleus and cytoplasm. It is comprised of several subunits that form a channel with a central pore. Surrounding the pore is a nonmembranous annulus with spoke-like structures. The pore wall contains columnar and lumenal subunits anchored by transmembrane proteins. Tiny fibrils extend from both sides in basket-like configurations, with different protein compositions on each side. Nuclear pores allow entry and exit of proteins and molecules to perform functions inside and outside the nucleus.
Cell junctions molecular biology of the cell - ncbi bookshelf
This document summarizes cell junctions, which occur at points of cell-cell and cell-matrix contact. It describes three types of cell junctions: occluding junctions that prevent molecules from leaking between cells; anchoring junctions that mechanically attach cells to each other or the extracellular matrix; and communicating junctions that allow signal passage between cells. The document focuses on tight junctions and septate junctions as examples of occluding junctions, describing their structure and role in forming a selective permeability barrier in epithelial cell sheets.
Plasmodesmata
Plasmodesmata are narrow strands of cytoplasm that connect adjacent plant cells and allow for transport of substances between cells. They were first observed under light microscopes in 1879 but required electron microscopes to confirm their nature as cytoplasmic strands. Plasmodesmata contain a plasma membrane-lined channel and a desmotubule made of tightly constricted endoplasmic reticulum. Substances move between cells through the region between the desmotubule and plasma membrane, called the cytoplasmic sleeve. Plasmodesmata are either primary, formed during cell division, or secondary, formed across existing cell walls.
Chromosomes
It is a powerpoint presentation that discusses about the lesson or topic: Chromosomes. It also talks about the definition, history and the concepts about Chromosomes
C &m ppt [autosaved]
it gives information about the nucleus which is the major cell component and its various parts like nuclear pores,nucleolus etc. it helps in the replication of DNA which contain genetic material.
Desmosomes & hemidesmosomes
Desmosomes and hemidesmosomes are cell junctions that connect adjacent cells or attach cells to the extracellular matrix. Desmosomes link the intermediate filaments of neighboring cells, forming strong bonds especially in tissues under mechanical stress like skin. They are composed of transmembrane proteins, plaque proteins, and intermediate filaments. Hemidesmosomes attach basal epithelial cells to the basement membrane. Loss of desmosome function can cause skin and mucous membrane fragility disorders like pemphigus.
The nuclear membrane
The nuclear membrane, also known as the nuclear envelope, is a double lipid bilayer that surrounds the genetic material and nucleolus in eukaryotic cells. It consists of an inner and outer nuclear membrane, with the space between called the perinuclear space. The nuclear membrane functions to compartmentalize the nuclear material, maintain the shape and stability of the nucleus, regulate the transport of substances into and out of the nucleus through nuclear pores, and facilitate communication between the nucleus and the cell.
Role of kinetochore in cell division
The kinetochore is a protein structure that assembles at the centromeric region of chromosomes during cell division. It interacts with microtubules from the mitotic spindle to help segregate replicated sister chromatids to opposite poles of the cell. The kinetochore is made up of an inner region that binds to centromeric DNA, and an outer region called the KMN network that interacts with microtubule plus ends. Precise attachment of kinetochore microtubules is regulated by the Aurora B kinase to ensure chromosomes are properly bi-oriented on the mitotic spindle before the onset of anaphase. Failure of kinetochore function can lead to chromosomal abnormalities.
Cell cycle regulation Basics
The cell cycle is the ordered series of events that leads to cell division into two daughter cells. It consists of four main phases: G1, S, G2, and M. Checkpoints ensure each step is completed before progression. Cyclins activate CDKs at specific phases - G1 cyclins activate G1 CDKs which promote DNA replication by phosphorylating Rb and activating E2Fs. S-phase CDKs activate DNA replication origins. Mitotic CDKs promote mitotic events like spindle formation and chromosome condensation. Completion of mitosis involves chromosome segregation and cyclin degradation to inactivate CDKs and allow cell division.
Nucleus of a cell
The document discusses the key parts of a cell's nucleus. It describes the nucleus as the cell's "CPU" that stores DNA and coordinates the cell's activities. The nucleus contains chromosomes that hold the cell's genetic information. Within the nucleus are the nucleolus, which manufactures ribosomes, and the nuclear envelope and pores, which regulate passage between the nucleus and cytoplasm. The nucleus controls critical cell functions like growth, metabolism, and reproduction.
Cell junctions
Cell junctions are structures that allow for long-term association between neighboring cells. The three main types are tight junctions, adhesive junctions, and gap junctions. Adhesive junctions such as desmosomes and adherens junctions link cells together and to the extracellular matrix. These junctions contain intracellular attachment proteins and transmembrane linker proteins that anchor actin filaments or intermediate filaments. Gap junctions allow direct communication between cells by forming channels between their plasma membranes.
Cell Cycle Review
The cell cycle consists of interphase where the cell grows and DNA replicates, followed by mitosis where the cell divides into two daughter cells. During interphase the cell performs its normal functions and DNA replication occurs preparing the cell for division. Mitosis then begins with prophase where the cell prepares its nucleus to divide, followed by metaphase where chromosomes line up in the center, anaphase where chromosomes split and move apart, and telophase where the cell forms two new nuclei. Cytokinesis then divides the cytoplasm creating two new daughter cells that enter back into interphase to repeat the cell cycle.
Cell biology
This document provides definitions and details about cell biology. It begins by defining cell biology and its history. It describes the origin of life and cells, including theories about abiogenesis and the endosymbiotic theory of the origin of eukaryotic cells. It discusses cell theory and the two main types of cells - prokaryotic and eukaryotic cells. Further, it provides information about key cellular structures like the cell membrane, nucleus, and their structure and functions. The document is a comprehensive overview of foundational concepts in cell biology.
Epithelial CELL JUNCTIONS /endodontic courses
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
What's hot (20)
Cell junctions molecular biology of the cell - ncbi bookshelf
Cell junctions molecular biology of the cell - ncbi bookshelf
More from Harris
Chris houston
The document discusses different species of small cats. It provides classifications for jaguars and describes their family tree, which includes jaguars, bobcats, and house cats. Various cats are also described, such as cheetahs being the fastest land animal, able to reach speeds of 45 mph in 2.5 seconds. Jaguars are found in tropical rainforests and eat large prey like capybaras. Leopards have rosette spots covering their bodies while cheetahs have large singular spots. Small cats are found universally around the world.
Penguins
Penguins are mainly found in Antarctica but also live in Australia, Argentina, and Africa. They are carnivores that mainly eat fish. There are 18 known penguin species, with king and emperor penguins being the most common. Penguins range in height from 16 inches to 3.5 feet tall and can live up to 30 years in captivity. They are related to seabirds but cannot fly and instead use their wings to swim. Sea lions are a main predator of penguin populations.
Life Cycle of a Frog
The document describes the life cycle of a frog in 5 stages: 1) It hatches from an egg on land or near water in a jelly-like substance. 2) As a tadpole, it lives in water and develops lungs, a heart and organs. 3) It is called a tadpole when born. 4) Once organs are fully developed, the tadpole can leave the water. 5) It is now a frog with full organs and out of the water, no longer a tadpole.
Kylee&allison 1st period
The document describes the life cycle of a frog in 5 stages: 1) It hatches from an egg on land or near water in a jelly-like substance. 2) As a tadpole, it lives in water and develops lungs, a heart and organs. 3) It is called a tadpole when born. 4) Once organs are fully developed, the tadpole can leave the water. 5) It is now a frog with full organs and out of the water, no longer a tadpole.
Little Cats
Little Cats provides information about various cat species through a letter-themed organization. It covers the classification, family tree, traits, behaviors, and habitats of cats such as jaguars, cheetahs, leopards, house cats, fishing cats, and cougars. Key details include that cheetahs are the fastest land animal and can reach 64 mph, jaguars prey on large animals like capybara in tropical rainforests, and leopards have distinctive rosette spots covering their bodies. The document conveys information about cats in a simple, alphabetical format.
Whales 3.26.10
The document provides information about various aspects of whales and dolphins. It discusses their classification, abilities like echolocation, common species such as bottle nose dolphins, body parts like fins and jaws, diet which includes krill, and habitats such as ocean canyons. Photos supplement some entries to illustrate different whales, dolphins, body parts, and food sources.
Polar Bears
Polar bears are large carnivorous bears found in Arctic regions. They are classified as part of the bear family Ursidae. Polar bears primarily prey on seals, but will also eat other small animals or scavenge if necessary. Despite their large size, adult polar bears typically only live 20 years in the wild. They are well adapted to life in icy cold climates, having thick fur and a layer of fat to help insulate them.
Seal Alphabet Aly Heather Hannah
Seals and sea lions live primarily in arctic regions. They have adaptations like tusks and flippers that help them survive in icy waters - tusks make breathing holes and flippers allow for fast swimming. Their main predators are killer whales, though predators also tip ice caps to slide seals into the water.
Polar Bears
Polar bears live in the Arctic for half the year and on the mainland the other half, hunting berries. They are classified as mammals in the order Carnivora and resemble brown and black bears but are true carnivores that eat seals and arctic fox. Their population is as low as 10,000 in some areas due to threats like global warming melting their sea ice habitat and reducing prey like seals.
Kangaroos
Kangaroos are found primarily in eastern Australia but also parts of New Guinea and Tasmania. Male kangaroos are called boomers and females are called flyers. Tree kangaroos have grasping hands and leaping hind legs that allow them to be excellent climbers. Kangaroos communicate through drumming their large feet and rest by leaning on their elbows similar to humans. They have big feet and long tails and eat grass, shrubs and sometimes berries. Baby kangaroos are called joeys and live in their mother's pouch for 6-8 months. Red kangaroos are the largest type at up to 6 feet tall. Kangaroos can leap up to 30 feet and
Dolphins Research
Dolphins have grayish rubbery skin and blowholes on their heads. They have jelly-like eyes to prevent salt irritation. Males typically live 30 years while females live 40 years. Dolphins eat fish, squid, and crab as predators, but are also prey to larger sharks. They mostly live in coastal areas of the Atlantic, South America, and Europe. Dolphins are classified as mammals in the order Cetacea along with their close relatives whales and porpoises.
Skunk Research
Skunks are small, black and white mustelids known for their ability to spray a foul-smelling liquid as a defense mechanism. They are omnivores that eat plants like fruits and roots as well as small animals. Skunks can spray their musk from up to 15 feet away and will often do a handstand before spraying. Their mothers teach them skills for hunting, protection, and independence.
Cheetah Research
The document discusses various facts about cheetahs. It covers their scientific name, classification as big cats along with other species, what a young cheetah is called, their diet of smaller antelopes and ostrich eggs, their ability to run very fast up to 100 mph but tire quickly, habitat in open plains, similarity to leopards but different build, being predators of frogs and hares, inability to roar unlike other big cats, and efforts by zoos to create habitats for cheetahs to raise their young.
Great Ape Research
The document discusses various facts about great apes. It covers their classification, family tree, behaviors, characteristics, and abilities. Some key points include:
- Great apes include gorillas, chimpanzees, orangutans, and gibbons. Gorillas are the largest species and can be 3-4 times stronger than humans.
- Baby apes spend about a third of their day walking and playing. Common chimpanzees live both on the ground and in trees, and can learn sign language.
- Great apes like gorillas and orangutans eat foods like fruits, insects, and occasionally other small mammals. Eastern lowland gorillas are the largest known ap
Enangered Animals:Grey Wolf, Kimodo Dragon and Polar Bear
The document discusses several endangered species including Komodo dragons, grey wolves, polar bears. It provides details about their hunting behaviors, pack structures, diets, habitats, lifespans and relationships to other species. Komodo dragons hunt using their tongue and bacteria-filled mouths, grey wolves live in packs of 18-35 individuals and hunt large prey, and polar bears primarily eat seals and live alone in the arctic.
Wild Horses
Wild horses are large, four-legged mammals that usually live on flat plains in Africa and Asia. They can run very fast to escape predators like lions. Their eyes allow them to see in front and behind at the same time, and their bones are light but strong. Their hooves, made of keratin, protect the foot bone. Domestic horses live all over the world.
Seabirds Research
Seabirds have several adaptations that allow them to thrive in aquatic environments. Their bodies are built for flying and diving to catch fish. They communicate through sounds and gestures. Many seabirds like pelicans and diving birds catch fish by diving underwater. Seabirds lay eggs from which hatch young. They fly to scan waters from above to spot prey. Common seabirds include herring gulls that live near various bodies of water. Seabirds are omnivorous and eat both fish and plant materials. Pelicans are the state bird of Louisiana. Seabirds live near seas, rivers, lakes and other water sources.
Sea Birds1
The document discusses several types of seabirds, including the largest flying bird, the Wandering Albatross, with an 11-foot wingspan. Some seabirds like loons will dive for minutes to catch prey underwater. Gulls are intelligent and will drop shellfish onto rocks to crack open the shells. The smallest seabirds are storm petrels, weighing just half an ounce. Penguins are also seabirds but cannot fly, though some can dive over 800 feet deep. Seabirds have varying beak sizes and shapes suited to their diets, and skimmers have unusually large lower beaks. The document concludes with the Bald Eagle, a symbol of the United States.
Paradise Of Parrots Vlj
Parrots have various physical attributes that allow them to survive. They have pointed beaks for breaking nuts and catching prey, claws for gripping, and hollow bones that make flight easier. Their diets consist of worms, nuts, nectar or pollen depending on the species. Parrots nest in tree canopies or termite mounds and have over 300 species worldwide that live in different climates from tropical forests to varying weather.
Aligator Research
Alligators, crocodiles, and gharials make up the crocodilian family. Crocodilians are reptiles with rough scaly skin and thick bony plates along their backs and tails. Alligators and crocodiles are carnivores that eat only meat like fish. They live in countries like the United States, Africa, Asia, and Australia. The alligator is the state reptile of Florida and Louisiana.
More from Harris (20)
Enangered Animals:Grey Wolf, Kimodo Dragon and Polar Bear
Enangered Animals:Grey Wolf, Kimodo Dragon and Polar Bear
Recently uploaded
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
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...Nguyen Thanh Tu Collection
https://app.box.com/s/qhtvq32h4ybf9t49ku85x0n3xl4jhr15BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdHow to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
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
clinical examination of hip joint (1).pdf
described clinical examination all orthopeadic conditions .
BBR 2024 Summer Sessions Interview Training
Qualitative research interview training by Professor Katrina Pritchard and Dr Helen Williams
Wound healing PPT
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
The History of Stoke Newington Street Names
Presented at the Stoke Newington Literary Festival on 9th June 2024
www.StokeNewingtonHistory.com
PCOS corelations and management through Ayurveda.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
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.
Leveraging Generative AI to Drive Nonprofit Innovation
In this webinar, participants learned how to utilize Generative AI to streamline operations and elevate member engagement. Amazon Web Service experts provided a customer specific use cases and dived into low/no-code tools that are quick and easy to deploy through Amazon Web Service (AWS.)
Recently uploaded (20)
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
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...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
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
Leveraging Generative AI to Drive Nonprofit Innovation
Leveraging Generative AI to Drive Nonprofit Innovation
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Steps Of Mitosis
- 3. METAPHASE *METAPHASE IS WHERE THE CHROMOSIOMES LINE UP ALONG THE EQUATOR OF THE CELL.