Quiz  /  NEET MCQ on Krebs Cycle

  • 1. 
    Product of Krebs cycle essential for oxidative phosphorylation is _______

  • NADPH and ATP
  • Acetyl CoA
  • CO
  • NADH and FADH

  • 2. 
    A single molecule of glucose generates _________ molecules of acetyl CoA, which enters the Krebs cycle

  • 4
  • 3
  • 2
  • 1

  • 3. 
    ___________ accepts hydrogen from malate

  • FAD
  • NAD
  • NADP
  • FMN

  • 4. 
    Which of the intermediate of the Kreb’s cycle is utilised in the formation of amino acids?

  • Citric acid
  • Malic acid
  • Isocitric acid
  • 𝛼-ketoglutaric acid

  • 5. 
    Krebs cycle occurs in aerobic respiration due to

  • Electron transport chain requires aerobic conditions to operate
  • Oxygen is a reactant
  • Oxygen has a catalytic function
  • All of the above

  • 6. 
    Acetyl CoA is formed from pyruvate by__________ reaction

  • Dehydration
  • Reduction
  • Oxidative decarboxylation
  • Dephosphorylation

  • 7. 
    Which of the following is not formed during the Krebs cycle?

  • Lactate
  • Isocitrate
  • Succinate
  • Both and

  • 8. 
    The entry of pyruvate into the TCA cycle is inhibited by the presence of a high cellular concentration of

  • Pyruvate
  • NADH
  • Coenzyme A
  • AMP

  • 9. 
    ATP synthesis is powered by

  • Coenzyme motive force
  • cAMP
  • proton gradient
  • GTP hydrolysis

  • 10. 
    FAD is reduced in which of the reaction of the Kreb’s cycle?

  • Isocitrate to oxaloacetate
  • Succinyl CoA to Succinate
  • Fumarate to malate
  • Succinate to fumarate
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