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| is the maintenance of stable internal condition in a cell or organism despite changes in its environment |
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| of a solution describes how acidic or basic the solution is |
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| is a substance that tends to maintain a stable pH |
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| is the movement of particles from an area of higher concentration to an area of lower concentration |
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| The movement of materials into or out of the cell without the expenditure of energy |
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| When particles reach this state of equal concentration or balance, the system is at ___ |
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| plasma membrane are __ - that is, only some kinds of particles can pass through them. |
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| is the movement of water molecules into a concentrated solution from a less concentrated solution -either into or out of the cell. |
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| A difference in concentration on opposite sides of a plasma membrane makes osmosis possible the difference is called ___. |
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| the concentration of a solute outside the cell is higher than the concentration in the cytoplasm |
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| the concentration of solute in the cytoplasm is higher than the concentration outside the cell. |
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| is the movement of substance across the plasma membrane with the aid of protein molecules embedded in the membrane |
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Definition
| Moving material against the concentration gradient requires energy is called ____ |
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Definition
| is information gathered with the senses or measured with a tool |
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| is an explanation based on knowledge and prior experience |
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| Solutions with equal concentrations on both sides of a membrane are ____ |
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