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15 Cards in this Set
- Front
- Back
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Plasma Membrane
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(Cell Membrane)
Structure: double layer of fats w/ protein in the cell membrane. selectively permeable (something can go through it) Functions: passive transport(no energy)=diffusion, active transport(energy required)=exocytosis, endocytosis |
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Microvilli
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In plasma membrane...helps increase surface area
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Cilia
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In plasma membrane...motile, moves substances over the surface of stationary cells
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Flagellum
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(sperm) In plasma membrane...motile, whip-like structure that moves cells
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Diffusion
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some SMALL materials may diffuse/pass through the cell membrane on their own.
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Exocytosis
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(secretion) process by which cellular materials exit the cell
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Endocytosis
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process by which materials are brought into a cell
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Mitochondria
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makes ATP (adenosine triphosphate, energy molecules)
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Ribosomes
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involved in protein synthesis
two-kinds: free ribosomes and ribosomes attached to ER |
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Endoplasmic Reticulum (ER)
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a network of tubules used to transport and synthesize (produce) materials
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Rough ER
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has ribosomes on walls...transports proteins made by ribosomes
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Smooth ER
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has no ribosomes...synthesis lipids, mainly steroids(groups of lipids), and detoxify drugs and alcohol (liver)
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Golgi Apparatus
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several C-shaped sacs near the nucleus, packages materials for secretion, forms lysosomes
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Lysosomes
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contain digestive enzymes
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Centrioles
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involved in cell divison, produce mitotic spindles
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