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The tendency toward a relatively stable equilibrium between interdependent elements, esp. as maintained by physiological processes.
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| The series of metabolic processes by which living cells produce energy through the oxidation of organic substances. |
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| The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct. |
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| The process in cell division by which the nucleus divides, typically consisting of four stages, prophase, metaphase, anaphase, and telophase, and normally resulting in two new nuclei, each of which contains a complete copy of the parental chromosomes. Also calledkaryokinesis. |
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| The process of diffusing or the condition of being diffused. |
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| Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane. |
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| A process of cellular ingestion by which the plasma membrane folds inward to bring substances into the cell. |
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| (ectocytic) outside the cell (extracellular, adjective) |
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