Genes, cells and populations

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1. What are microvilli?

  • Small finger like extensions on the surface of epithelial cells
  • Large extensions on the surface of epithelial cells
  • Ingrowths of the cell wall
  • Small finger like extensions on the surface of intestinal cells
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Other questions in this quiz

2. Why are cells so small?

  • Cells have an infinite life span, and small cells are easier to replace
  • Limited by surface volume area and the need to rapidly diffuse chemicals in and out of the cell
  • Limited by surface volume area and the need to rapidly diffuse respiratory gases
  • Limited by nutrients

3. What are the 3 components of the cytoskeleton

  • Microtubules, Microfllaments and intermediate filaments
  • Actin, Myosin and Kinesin
  • Dynein, Kinesin and Mucin
  • Microfilaments, microtubules and indeterminate filaments

4. Why do cells and organelles have different compartments? 1. to sequester toxic substances 2. To simplify the metabolic system 3. to maintain different environments in different parts in the cell 4. to enable them to produce toxins

  • 4 only is correct
  • 1 and 3 only are correct
  • 1, 2 and 3 are correct
  • 2 and 4 only are correct

5. What is the purpose of the centriole

  • To reinforce the cell's shape
  • To make spindle fibres
  • To initiate microtubules and organise spindle fibres
  • Acts as a track way for organelle transport

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