chloroplasts and mitochondria because they require both functions. 9. Possible student answer: One function of lysosomes is to remove debris that might clutter a cell. This is analogous to the work a cleanup crew in a factory might perform. 10. A plant cell has cell walls and chloroplasts‚ structures not found in animal cells. An animal cell has the unique structures of lysosomes. Section Review 7-3 ANSWER KEY most of the dribbling and another player to do most of the rebounding.
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3A The Structure of Cells Monday‚ September 30‚ 2013 • Cytology ○ Cyto = cell ○ Logos = study of • Background ○ 1665 Robert Hook’s Micrographia § Was studying cork cells ○ 1833 R. Brown § Discovered nucleus ○ 1838 M. Schleiden § Said that all plants consist of cells ○ 1839 T. Schwann § All animals consist of cells ○ 1855 Virchow § Cells come only from preexisting cells • The Cell Theory ○ Cells are the structural units of all living things
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energy to make an organism out of small cells. ~A small cell has a larger surface area-to-volume ratio than a large cell. Small cells require less oxygen than large cells. 7. Ribosomes are found on the surface of this structure. Central Vacuole Rough ER Chloroplasts ~Golgi Bodies 8. The function of the nucleus is to produce proteins. contain the cytoplasm. ~contain and replicate DNA. add sugars to proteins. 9. The function of ribosomes is to synthesize RNA. DNA.
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Test #1 Review: Chapters 1‚ 2‚ & 3 Chapter 1. Describing life and science 1. Which is the correct sequence for levels of biological organization within an organism? • Atom-molecule-organelle-cell-tissue 2. Which is the correct sequence for levels of biological organization occurring beyond the individual? • Population-community-ecosystem-biosphere 3. To be considered a living organism‚ the organism must consist of • one or more cells 4. Which is not a required characteristic of
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phase followed by an infectious phase. The replicative phase involves a non-motile bacterium‚ with a minimal or absent toxicity. Once inside the macrophage‚ before it can begin its replicative phase‚ Legionella pneumophila forms a membrane bound vacuole that protects the bacterium. This structural change creates a physical barrier
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Chapter 3: Cell Structure Notes The cell is the basic unit of biologic organization of the human body Protoplasm: an aqueous colloidal solution of carbohydrates‚ proteins‚ lipids‚ nucleic acids‚ and inorganic salts surrounded by a limiting cell membrane Cells in our respiratory tract produce mucus to trap dust and microorganisms that get past the hairs in our nose then move the material to our throat to be swallowed and passed out through the digestive system The most prominent structure in the
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endoplasmic reticulum has been differentiated into two types? (2 marks) Q 4. Which cell organelles resemble following? 1. Kitchen of plant 2. Storage organ 3. Brain Q 5. A boiled egg was deshelled and then kept in water. What will happen? Q 6. How lysosomes resemble immune system? Q 7. How osmosis is a special case of diffusion? Q 8. Can a cell without nucleus (its nucleus is removed) work properly? (3 marks) (2 marks) (2 marks) (3 marks) (2 marks) Q 9. Does photosynthesis takes place in animal
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central vacuole (takes in water and chemicals)‚ cell wall (allows the plant to be strong enough to remain vertical)‚ and chloroplasts (turns light energy into sugars during photosynthesis) are present in a plant cell but not in an animal cell. 4.
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cell organelles found in a eukaryotic cell? • Structures include: cytoplasm‚ nucleus‚ nucleolus‚ nuclear envelope‚ cell membrane‚ mitochondria‚ Golgi bodies‚ vacuole‚ centrioles‚ ribosomes‚ and endoplasmic reticulum (smooth and rough) • Exclusive to plants: chloroplasts‚ central vacuole‚ cellulose cell wall • Exclusive to animals: lysosome‚ centrioles • Compare and contrast plant and animal cell structures • Special structures include; cilia and flagella LEQ: Number 2: What similarities and
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organelle w/ a network of membranes that produces many substances k. Golgi apparatus- receives proteins and other newly formed materials from the ER‚ packages them and distributes them to other parts of the cell l. Vacuoles stores water food and materials m. Lysosomes- saclike‚ brakes down large food particles into smaller ones
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