Cell Biology Lectures 6-10 MCQ

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

  • Causes by too much ATP being produced
  • Results in lesions in the hypothalamus and the midbrain
  • It is an early onset fatal disorder
  • Mutations found in complex II
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2. What is the theory of the evolution of the nucleus?

  • Combination of anaerobic pre-eukaryotic cell and an aeorbic prokaryote
  • Invagination of DNA-containing membrane
  • Invagination of pore-filled membrane
  • Combination of an early eukaryotic cell and a DNA plasmid

3. Which of the following is NOT true of an uncoupling agent?

  • Can cause seizures
  • Acts as a weak alkali
  • Can be used as a slimming agent
  • Disrupts proton gradient

4. Which of the following is NOT true about Cytochromes?

  • There are 3 types involved
  • Fat soluble - can diffuse through the bilayer
  • Type C moves between complex 3 and 4
  • Iron heme containing proteins

5. Which of the following statements about Ubiquinone is true?

  • No electrons - Semi-ubiquinone
  • No electrons - Ubiquinol
  • 2 electrons - Ubiquinol
  • 1 electron - Semi-ubiquinol

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