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Update Unit 2: Biology.md

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Daniel Chen 2019-10-25 18:08:37 +00:00 committed by James Su
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Grade 10/Science/SNC2DZ/Unit 2: Biology.md
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@ -24,6 +24,21 @@ A person contains roughly 100 trillion cells
## Cellular Organelles
### Business Analogy
| In a business | In a cell |
| ------------- | --------- |
| Building | Cytoplasm & Cytoskeleton |
| Department Head | Organelles |
| Boss | DNA |
| Workers | Ribosomes & Enzymes |
| Waste management | Lysosomes |
| Storage | Vacuoles |
| Powerhouse | Chloroplasts & Mitochondria |
| Security gate | Cell membrane controls entrance and exit from the cell |
| Transportation Department | IMPORT: Cell membranes and vesicles, INTERNAL: Endoplasmic reticulum & vesicles, EXPORT: Golgi apparatus, vesicles, and cell membrane |
### Cell Membrane
- Controls what substances enter/leave the cell selectively via various receptors/osmosis
- Allows nutrients to enter