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| Eukaryotes vs. Prokaryotes |
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Definition
nucleus vs. no nucleus many specialized organelles in cytoplasm vs. ribosomes only reaches 1m vs. smaller than 1um seen in both multicellular and unicellular organisms vs. seen only in unicellular organisms BOTH HAVE or can have:cell membrane, cell wall, DNA |
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1. all living things are composed of cells 2. cells are the basic unit of structure and function in living things 3. new cells are produced from pre-existing cells |
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1. a prokaryote and a eukaryote once developed an endosybiotic relationship in which the prokaryote was inside the eukaryote 2. they evolved into mitochondria and chloroplasts Evidence: they both have two membranes, similar functions, their own DNA, and they must divide instead of being synthesized. |
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| movement of solute from high concentration to low concentration |
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| the diffusion of water accross a selectively permeable membrane |
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| outside of cell has higher concentration than inside of cell; water leaves cell |
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| there is an equilibrium, the water moves in and out of the cell |
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| outside of cell has lower concentration than inside, water moves into cell, possibly causing it to explode |
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| movement of large or charged molecules, through protein channels, from high concentration to low concentration |
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| transport of molecules that does not require the cell to use energy |
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| simple diffusion, facilitated diffusion, and osmosis |
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| transport of molecules that does require the cess to use energy |
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| active transport includes... |
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| endocytosis (pinocytosis and phagocytosis), exocytosis |
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| movement into the cell by pinching of the cell membrane around material, creating a vacuole |
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| cell "drinking" of fluids |
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| movement out of the cell; the cell may make things needed somewhere else in the body or produce waste, both of which need to be pumped out; the waste, protein etc. is packaged in a vacuole that fuses with the cell membrane and contents are released |
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