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3.7: Summary

Last updated

Sep 15, 2022
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- 3.6: The Cell As A Factory
- 3.8: Worksheets

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Cells consist of three parts: the plasma membrane, cytoplasm and nucleus.
Substances pass through the plasma membrane by diffusion(gases, lipids), osmosis (water), active transport (glucose, ions), phagocytosis (particles), pinocytosis (fluids) and exocytosis (particles and fluids).
Osmosis is the diffusion of water through a semipermeable membrane. Water diffuses from high water "concentration" to low water "concentration".
The cytoplasm consists of cytosol in which are suspended cell inclusions and organelles.
organelles include ribosomes, endoplasmic reticulum, mitochondria, Golgi bodies and lysosomes.
The nucleus controls the activity of the cell. It contains the chromosomes that are composed of DNA.
The cell divides by mitosis and meiosis

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