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Term | Definition |
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homeostasis | the maintenance of a constant internal state in a changing environment |
photosynthesis | the process by which plant, algae, and some bacteria use sunlight, carbon dioxide, and water to make food |
cellular respiration | the process by which cells use oxygen to produce energy from food |
mitosis | in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes |
passive transport | the movement of substances across a cell membrane without the use of energy by the cell |
diffusion | the movement of particles from regions of higher density to regions of lower density |
osmosis | the diffusion of water through a semipermeable |
active transport | the movement of substances across the cell membrane that requires the cell to use energy |
endocytosis | the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell |
exocytosis | the process in which a cell releases a particle by enclosing the particle in a vesicle that then moves to the cell surface and fuses with the cell membrane |