Cells

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  • 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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