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16 Cards in this Set
- Front
- Back
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Unit membrane
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a continuous structure of a cell that has one surface bordered by cytoplasm and the other by the outside world
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cell membrane
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the membrane that surrounds the cytoplasm (fluid) of a cell
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What is the difference between a cell membrane and a unit membrane?
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???
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cell wall
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cell membrane made of cellulose which gives plants cells strength and protection
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vacuole
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a fluid filled sac
helps support cell wall and stores H2O and chemicals |
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What are the 5 parts of a nucleus?
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-nuclear envelope
-chromatin -nucleolus -nucleoplasm -nuclear pore |
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Nuclear envelope
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-membrane that holds nuclear contents.
-selectivly permeable to control movement in or out of cell |
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Chromatin
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Composed of long thin strands of DNA. Contains instructions which control cell metabolism and heredity.
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Nucleolus
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clumps of RNA and protein. DNA is copied here. Works with ribosomes in synthesis of protein.
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Chloroplast
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site of photosynthesis
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centriole
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forms spindle fibers to separate chromosomes during cell division
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Endoplasmic Reticulum (ER)
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-transports chemicals between and within cells
-provides large surface area for organization of chemical chem reactions and synthesis |
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Ribosomes
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-site of protein synthesis
-located on ER |
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Golgi apparatus
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modifies chemicals so that they can be used.
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Mitochondrion
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-site of cellular respiration i.e. where chemical energy is released from food
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Lysosome
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breaks large molecules of food into smaller more usable molecules by inserting a molecule of H2O into the chem bond
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