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6 Cards in this Set
- Front
- Back
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What are passive and active transport? |
Passive: the movement of materials across the cell membrane without using energy (ex. diffusion). Active: the movement of materials across the cell membrane against the concentration gradient using energy. |
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How will water or solutes travel in a hypertonic, hypotonic, or isotonic solution? |
In a hypertonic solution, water will move from a substance to the solution. In a hypotonic solution, water will move from the solution into a substance. In an isotonic solution, water will not move. |
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What are endocytosis and exocytosis? |
Endocytosis: taking materials into the cell by means of pockets of the cell membrane. Exocytosis: the membrane of the vacuole surrounding the material fuses with the cell membrane, releasing the contents. |
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Why is the maintenance of a relatively stable internal environment necessary for survival? |
The maintenance of a stable internal environment is important so that the reactions that allow an organism to survive are at an optimal level. |
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What is cell specialization? |
Certain cells specialize in certain functions. The shape of a cell is related to its function. |
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What are the levels of organization in eukaryotes? |
The levels of organization are organelle, cell, tissue, organ, system, organism. |
