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Lesson 5
Homeostasis
Term | Definition |
---|---|
homeostasis | the maintenance of a constant internal state in a changing environment. |
photosynthesis | the process by which plants, algae, and some other bacteria uses 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 membrane. |
active transport | the movement of substances across 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. |