Cells
- Created by: AasiyahK
- Created on: 20-03-15 17:42
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- Human Cells
- Nucleus: contains genetic material- controls activities of cells.
- Cytoplasm: gel-like substance, where chemical reactions happens. contains enzymes that control the chemical reactions.
- Cell membrane: holds the cell together, controls what goes in and out.
- Mitochondria: reactions for respiration take place. respiration releases energy that the cells need.
- Ribosomes: Where proteins are made.
- Animal Cells
- Rigid cell wall: made of cellulose. supports and strengthens cell.
- Permanent Vacuole: contains cell sap- weak solution of sugars and salts
- Chloroplast: Contains chlorophyll. photosynthes-is occurs here, food is made
- Yeast Cell
- Single celled micro-organism
- Has a: Nucleus, cytoplasm, cell wall and a cell membrane
- Reproduces by asexual budding (new yeast cell grows from original)
- Can survive even if little oxygen by anaerobic respiration-> cells break down sugar->makes ethanol and co2.
- Anaerobic respiration of yeast cell= fermentation (used in alcoholic drinks and bread)
- Bacterial Cells
- Single celled micro-organism
- Has a: cytoplasm, cell membrane and cell wall. No nucleus- Genetic material floats in cytoplasm.
- Contains plasmids- Circular bits of DNA (carries extra genetic information).
- Flagellum- long protein strand. Some bacterial cells can be harmless/dan-gerous
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