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9 Cards in this Set
- Front
- Back
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What is a cell? |
Cell is the structural and functional unit of organisms |
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What are the three main parts of the cell? |
1. Plasma membrane 2. Cytoplasm 3. Nucleus |
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Function of plasma membrane? |
Barrier and outer boundary |
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Cytoplasm |
- Contains organelles which perform specific cellular functions - semi fluid medium |
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What does the nucleus do? |
Controls cellular activity Contains DNA Usually near the center of the cell |
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Functions of the membrane proteins |
- transport - enzyme activity - receptors - intercellular recognition - cell joining |
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Osmosis def. |
Movement of water from an area of higher water concentration to an area of lower water concentration across a semipermable membrane |
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Diffusion |
Molecules move from a High to a low concentration |
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What are the 4 components of cell theory? |
1. Basic structural and functional unit of living organism 2. The activity of an organism depends on both the individual and the collective activities of its cells 3. Biochemical activity is related to subcellular structures (organelles) 4. Continuity of life from one generation to another has a cellular basis |
