Cell Biology Lectures 6-10 MCQ

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1. Which of the following is true of Leigh syndrome?

  • Mutations found in complex II
  • Causes by too much ATP being produced
  • It is an early onset fatal disorder
  • Results in lesions in the hypothalamus and the midbrain
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2. Which of the following is NOT true of Fructose-2,-6-bispohosphate?

  • Regulates pyruvate kinase
  • Regulates phosphofructokinase-1
  • Its production is catalysed by PFK-2
  • it is phosphorylated it slows down glycolysis

3. Which of the following is NOT true of Complex I?

  • Contains 6 Iron-sulphur centres and flavin mononucletide
  • The ubiquinol formed then diffuses to Complex II
  • Transfer of electrons from NADH to Ubiquinone occurs here
  • 4 potons pumped into intermembrane space

4. How much NADH is produced from glycolysis?

  • 2 molecules
  • 4 molecules
  • No molecules
  • 3 molecules

5. What has been used to study nuclear localization signals?

  • E6 and E7 oncoproteins of HPV
  • Large T-antigen of SV40 virus
  • Adenovirus E1a protein
  • Polyoma middle T-antigen

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