Cells
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All organisms are made up of cells, which are the smallest functional and structural units. Eukaryotic cells contain DNA within a nucleus, as well as other organelles like mitochondria, chloroplasts, and lysosomes. The endosymbiotic theory proposes that eukaryotic cells originated from engulfed prokaryotes that developed into specialized organelles. Evidence for this includes cellular membranes and DNA being similar to prokaryotes. Multicellular organisms evolved as cells began to specialize and cooperate to allow organisms to grow larger while maintaining efficient nutrient exchange.
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Cells
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This document discusses the history and components of cells. It begins by introducing microscopy techniques like light and electron microscopy used to study cells. It then covers early discoveries in cell biology by Hooke, van Leeuwenhoek and the formulation of the cell theory. The rest of the document details the structures and organelles found within plant and animal cells like the nucleus, mitochondria, chloroplasts, ER, Golgi apparatus and describes their functions in cellular processes.
The cell factory
The document discusses microscopy and cell structure. It begins by describing different types of microscopes used to study cells, including light and electron microscopes. It then provides a brief history of cell discovery, including early observations by Hooke, van Leeuwenhoek, and the formulation of the cell theory. The rest of the document details the structures and organelles found within plant and animal cells, including the nucleus, mitochondria, chloroplasts, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, and cytoskeleton. It explains the functions of these various organelles that allow cells to carry out life's processes.
Cell structure.pptx
This document discusses cell structure and types of cells. It begins by defining the cell as the basic unit of life and describes both single-celled and multicellular organisms. The structures and organelles of cells are then outlined, including the cell membrane, nucleus, cytoplasm, and organelles. The two main types of cells - prokaryotic and eukaryotic cells - are also summarized. Prokaryotic cells lack a nucleus and organelles, while eukaryotic cells have membrane-bound nuclei and organelles.
Cell structure.pptx
This document discusses cell structure and types of cells. It begins by defining the cell as the basic unit of life and describes single-celled and multicellular organisms. The components of cells are then outlined, including the cell membrane, nucleus, cytoplasm, and organelles. The two main types of cells - prokaryotic and eukaryotic cells - are also summarized. Prokaryotic cells lack a nucleus and organelles, while eukaryotic cells have membrane-bound nuclei and organelles.
CELL ORGANELLES
The document provides an overview of cell organelles. It begins by defining a cell and its basic components. It then distinguishes between prokaryotic and eukaryotic cells, noting that eukaryotic cells are more complex with internal organelles. The three major parts of the cell - plasma membrane, nucleus, and cytoplasm - are introduced. Further details are given about the nucleus, its structures, and its role. The cytoplasm and its components of cytosol and inclusions are defined. Finally, the key organelles found in eukaryotic cells are described, including their structures and functions.
III Pharm.D - The Dynamic Cell - III Pharm.D - The Dynamic Cell - Cellular cl...
III Pharm.D - The Dynamic Cell - III Pharm.D - The Dynamic Cell - Cellular cl...Kameshwaran Sugavanam
III Pharm.D -Pharmacology II - The Dynamic Cell - III Pharm.D - The Dynamic Cell - Cellular classification, subcellular organelles ppt. As per PCI syllabusSimilar to Cells (20)
III Pharm.D - The Dynamic Cell - III Pharm.D - The Dynamic Cell - Cellular cl...
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This document outlines the annual plan for an Ecology class taught by Lic. Cintia Furmento. The plan includes expectations for student achievement such as acquiring vocabulary, understanding texts, producing oral and written work, and analyzing how human actions impact the Earth. It is divided into three units that will cover natural resources and energy, biodiversity, and sustainable development. Students will learn about renewable and nonrenewable resources, types of energy, threats to biodiversity like habitat destruction and invasive species, and examples of sustainable practices like organic family gardening. Assessment will focus on students' ability to relate topics, use technical vocabulary, and demonstrate comprehension through oral and written work.
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This annual planning document outlines expectations and contents for an Ecology class taught by Lic. Cintia Furmento in 2014. Students will be expected to acquire vocabulary, understand texts, produce oral and written work, and obtain and process different types of information. The conceptual contents will focus on three units - the water cycle and pollution, the composition and importance of air and pollution including the greenhouse effect, and the composition and recycling of soil. Procedural work will include researching different formats of information, reading comprehension, and oral and written expression. Exams will evaluate students' ability to relate topics, use of vocabulary, oral and written skills, participation, and reading comprehension.
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Cells
- 2. All organisms are made up of cells. The smallest functional and structural unit.
- 3. WHAT DO CELLS HAVE IN COMMON? DNA The genetic material that provides instructions for all cell processes. Prokaryotic Eukaryotic DNA is not contained in DNA is contained in an a nucleus. organelle called nucleus.
- 4. Cytoplasm Includes the fluid and the organelles. Organelles Specialized to perform a specific function. Cell Membrane A protective layer that controls the materials that enters or exit the cell.
- 5. EUKARYOTIC CELLS Animal Plant Mitochondria: cellular respiration. Ribosomes: makes proteins. Endoplasmatic Reticulum: makes proteins or lipids. Golgi Complex: deliver proteins and lipids. Lysosomes: contains Cell Wall: provides digestive enzymes . support. Large vacuola: storage. Chloroplasts: photosynthesis.
- 6. HOW WAS THE EUKARYOTIC CELL ORIGINATED? Endosymbiotic Theory
- 7. Videos
- 10. EVIDENCE? Membranes DNA Reproduction
- 11. WE ALL SHARE THE SAME ANCESTOR... LUCA: Last Universal Common Ancestor.
- 12. FROM UNICELLULAR TO MULTICELLULAR Unicellular: Eukaryotic Prokaryotic
- 13. When a cell grows in size it needs more nutrients and produces more waste. In addition the internal organization of the cell gets more complicated because all functions are disperse in a bigger space. It is necessary that cellular size is mantein small to favour reactions and exchange with the outside.
- 15. MULTICELLULAR ORGANISMS They can reach a big size because they are made up off lots of cells!
- 16. WHAT IS THE STRATEGY? Cell Specialization: cells differ in size and function: they perform different roles.
- 17. The cells cooperate with each other to achieve the functionality of the whole organism.