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 different pH's to be established
  • To enable translation of mRNA
  • To enable gene transcription
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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. What size molecules can be transported out of the nuclear pores

  • 40kDa
  • 100kDa
  • 50kDa
  • 40kDa

4. What are the 3 components of the cytoskeleton

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

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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