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Cells In Action
Amir Stephens
Term | Definition |
---|---|
Diffusion | The movement of particles from regions of higher density to regions of lower densisty |
Osmosis | The diffusion of water through a semipermeable membrane |
Passive Transport | The movement of substances across a cell membrane without the use of energy by the cell |
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 |
Photosynthesis | The process by which plants, 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 |
Fermentation | The breakdown of food without the use of exygen |
Cell Cycle | The life cycle of a cell |
Chromosomes | In a eukaryotic cell of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA |
Homologous Chromosomes | Chromosomes that have the same sequence of genes and the same structure |
Mitosis | In eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes |
Cytokinesis | The division of the cytoplasm of a cell |