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National 4/5 Biology

National 4/5 Biology. Unit 1: Cell Biology Section a: Cell Structure and Function. What do you remember?. A. B. C. D. What are we learning today?. We are learning to: recognise the difference between a plant and an animal cell Success criteria:

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National 4/5 Biology

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  1. National 4/5 Biology Unit 1: Cell Biology Section a: Cell Structure and Function

  2. What do you remember? A B C D

  3. What are we learning today? • We are learning to: recognise the difference between a plant and an animal cell • Success criteria: • I can name the structures of plant and animal cells • I can state the functions of the structures of a plant and animal cell • I can recognise diagrams and explain the differences between a plant and animal cell

  4. Some starter information • Cells are the basic units of life • All living organisms contain cells • There are many different types of cells • Unicellular organisms are made up of just one cell • Multicellular organisms are made up of many cells • Cells can be stained to see cell structures more clearly

  5. Animal cell structure 1. Cytoplasm 2. Ribosome 3. Nucleus 4. Mitochondria 5. Cell membrane

  6. Structure and function • Cytoplasm Site of biochemical reactions • Ribosome Site of protein synthesis • Nucleus Contains genetic information. Control centre of the cell • Mitochondria Site of aerobic respiration • Cell membrane Controls what enters and exits the cell

  7. Cheek epithelial cells: Example of animal cell

  8. Plant cell structure 1. Mitochondria 2. Vacuole 3. Chloroplast 4. Ribosome 5. Nucleus 6. Cytoplasm 7. Cell membrane 8. Cell wall

  9. Structure and function • Mitochondria Site of aerobic respiration • Vacuole Contains watery cell sap • Chloroplast Site of photosynthesis • Ribosome Site of protein synthesis • Nucleus Contains genetic information. Control centre of the cell • Cytoplasm Site of biochemical reactions • Cell membrane Controls what enters and exits the cell • Cell wall Boundary round plant cell, maintains cell shape. Freely permeable

  10. Examples of plant cells Onion Rhubarb Elodea What do all these cells appear to have in common?

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