Genes, cells and populations

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1. Why is the nucleus compartmentalized?

  • To enable gene expression to be regulated by post transcriptional modifications
  • To enable gene transcription
  • To enable different pH's to be established
  • To enable translation of mRNA
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Other questions in this quiz

2. 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

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

3. How many membranes in 5ml of hepatocytes?

  • A tennis court size
  • 10m2
  • 100m2
  • 100cm2

4. What is the purpose of the centriole

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

5. Why are cells so small?

  • Cells have an infinite life span, and small cells are easier to replace
  • Limited by nutrients
  • 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


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