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MCQs

Total Questions : 57 | Page 2 of 6 pages
Question 11. Most multi-cellular organisms obtain energy for the synthesis of ATP during oxidative phosphorylation from
  1.    a proton gradient across the inner mitochondrial membrane
  2.    high energy phosphate compounds
  3.    a proton gradient across the outer mitochondrial membrane
  4.    a proton gradient across the cell membrane
 Discuss Question
Answer: Option A. -> a proton gradient across the inner mitochondrial membrane
Question 12. Standard redox potential for a substance is measured under standard condition and is expressed as
  1.    mili-Ampere
  2.    Ohm
  3.    Volt
  4.    without unit
 Discuss Question
Answer: Option C. -> Volt
Question 13. The end product of glycolysis is pyruvate, which enters the citric acid cycle after being converted to
  1.    acetaldehyde
  2.    none of these
  3.    acetic acid
  4.    acetyl-CoA
 Discuss Question
Answer: Option D. -> acetyl-CoA
Question 14. A positive redox potential means substance has
  1.    higher affinity for electron
  2.    higher affinity for proton
  3.    lower affinity for electron
  4.    lower affinity for proton
 Discuss Question
Answer: Option A. -> higher affinity for electron
Question 15. Most of the enzymes of the citric acid cycle in a eukaryotic cell are located in the
  1.    intermembrane space
  2.    mitochondrial matrix
  3.    inner mitochondrial membrane
  4.    cytosol
 Discuss Question
Answer: Option B. -> mitochondrial matrix
Question 16. Which of the following enzyme does not take part in the TCA cycle?
  1.    Pyruvate dehydrogenase
  2.    Iso-citrate dehydrogenase
  3.    Malate dehydrogenase
  4.    Citrate synthase
 Discuss Question
Answer: Option A. -> Pyruvate dehydrogenase
Question 17. Energy that is released from glucose during respiration but not transferred to ATP bonds can be detected as
  1.    AMP
  2.    ADP
  3.    heat
  4.    CO2
 Discuss Question
Answer: Option C. -> heat
Question 18. Cholesterol can be synthesized de novo in
  1.    pancreas
  2.    cell membrane
  3.    liver
  4.    intestine
 Discuss Question
Answer: Option C. -> liver
Question 19. The first intermediate in TCA cycle is
  1.    citrate
  2.    succinate
  3.    fumerate
  4.    malate
 Discuss Question
Answer: Option A. -> citrate
Question 20. Which of the following is involved in energy production?
  1.    Generation of proton gradients across membranes
  2.    All of these
  3.    Conversion of compounds with high energy to those of low energy
  4.    Transport of electrons on organic molecules
 Discuss Question
Answer: Option B. -> All of these

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