click below
click below
Normal Size Small Size show me how
Chap 4 - Cell Proces
Chapter 4 - Cell Processes
| Term | Definition |
|---|---|
| Diffusion | the movement of particles from regions of higher density to regions of lower density |
| Osmosis | the diffusion of water through a semipermeable membrane |
| Passive Transport | the movement of substances across a cell membrane without the use of energy |
| Active Transport | the movement of substances across a cell membrane that requires 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 oxygen |
| List two examples of passive transport | diffusion, osomosis |
| List two examples of active transport | endocytosis, exocytosis |
| Cell Cycle | the life cycle of a cell |
| Chromosome | in a eukaryotic cell, one of the structures in the nucleus that are made up 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 whcih has the same number of chromosomes |
| Cytokinesis | the division of the cytoplasm of a cell; occurs after mitosis |
| Interphase | Before mitosis begins, when chromosomes are copied |