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| Question | Answer |
| Plasma (cell surface) membrane | Regulates the movement of substances into and out of the cell. It also has receptor molecules on it which allow it to respond to chemicals like hormones |
| cel wall | supports plant cells |
| nucleus | The nucleus contains chromatin which is made from proteins and DNA. The nuclear pores allow substances e.g. RNA to move between the nucleus and the cytoplasm. |
| lysosome | contains digestive enzymes. these are kept separate from the cytoplasm by the surrouding membrane, and can be used to digest invading cells or to break down warn out components of the cell. |
| Ribosome | the site where proteins are made |
| rough endoplasmic reticulum | folds and processes proteins that have been made at the ribosmes |
| smooth endoplasmic reticulum | synthesises and processes lipids |
| vesicle | transports substances in and out of the cell (via the cell surface membrane) and between organelles. some are formed by the golgi apparatus or the endoplasmic reticulum, while others are formed at the cell surface |
| golgi apparatus | it processes and packages new lipids and proteins. It also makes lysosomes |
| mitochondrion | The site of aerobic respiration where ATP is produced. They're found in large numbers in cells that are very active and require a lot of energy |
| chloroplast | the site where photosynthesis takes place some parts of photosynthesis happen in the grana, and other parts happen in the stroma |
| centriole | involved with the separation of chomosomes during cell division |
| cilia | the microtubules allow the cilia to move. This movement is used by the cell to move substances along the cell surface. |
| flagellum | the microtubules contract to make the flagellum move. flagella are used like outboard motors to propel cells forward |
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