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Organelles Biology I
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Plant Cell
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Cellular boundaries Cell membrane: thin flexible barrier around cells Cell Wall: An inflexible barrier protects the cell and gives support found in Bacteria Fungi Plants Cytoplasm: clear gelatinous fluid inside a cell
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Nucleus Controls most of cell processes contains DNA Contains material for making proteins Chromatin- DNA bound to proteins When divides forms chromosomes Contain genetic info
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Nucleus Nucleolus: within the nucleus makes ribosomes Nuclear envelope- double membrane around nucleus Filled with pores allows genetic material to pass through
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Animal Cells
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Cytoskeleton provide support for the cell Made up of protein Microtubules- provide shape tracks for organelle movement Help separate chromosomes Microfillament Long thin fibers function to support cell
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Support and Locomotion Cilia: short hairlike projections move in a wavelike motion Flagella: long projections move in a whip like motion
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Paramecium Cilia
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Euglena- Flagellum
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Assembly, Transport and Storage Endoplasmic reticulum: Parts of cell membrane are made proteins are modified Ribosomes proteins made
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ER not for doctors anymore Rough ER- proteins are modified here (synthesis) Ribosomes dot surface of Rough ER Smooth ER- Enzymes perform specialized tasks
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Golgi Golgi Apparatus: Sort and package proteins Send out proteins to particular destinations Mail room:)
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Storage and deletion Vacuoles: temporary storage of materials plants have a big Vacuole Lysosomes- small organelles filled with enzymes Break down lipids, carbohydrates and proteins Break down organelles which are no longer useful
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Energy Transfers Chloroplasts: capture light energy produce food to store for a later time Mitochandria: Transform energy for the cell. “Power house” of the cell Use energy from food
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Plant Cells
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Paramecium
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Euglena
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