| Term | Definition |
|---|
| cell membrane | thin, flexible barrier around a cell, regulates what enters and leaves |
| cell wall | strong layer around the cell membrane in plants, algae, and some bacteria |
| nucleus | in cells, large structures that contain the cell's genetic material (DNA) and controls the cell's activities |
| organelles | structures that make up the cytoplasm: little organs |
| prokaryote | cell that doesn't contain a nucleus |
| eukaryote | cell containing a nucleus |
| chromatin | consists of DNA bound to protein |
| diffusion | moving from an area of high concentration to an area of low concentration (does not require energy) |
| osmosis | the diffusion of water |
| endoplasmic reticulum | an internal membrane system in which components of cell membrance and some proteins are constructed |
| mitochondrion | uses energy from food to make high-energy compounds |
| chloroplast | uses energy from sunlight to make energy-rich food |
| ribosome | small particle of RNA and protein that produces protein following instructions from the nucleus |
| vacuole | saclike structure that stores materials |
| lysosome | filled with enzymes used to break down food into particles that can be used |
| cytoskeleton | network of protein filaments that help cell maintain shape; involved in cell movement |
| microtubules | hollow tubes of protein that maintain cell shape and form centrioles in cell division |
| microfilament | long thin fibers that support the cell and moves organelles within the cell |
| nuclear envelope | membrane that covers the nucleus |
| golgi apparatus | stack of membranes in which enzymes attach carbohydrates and lipids to proteins |
Combine with other sets
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