Biology MCQ on Krebs Cycle for NEET and Medical Exam 2021
MCQ on Krebs Cycle: Biology is one of the most important and vital sections in NEET. It includes theories, descriptions, discoveries, diagrams, definitions, explanation of differences and relations. Most of the concepts covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12. Other related sources make up for the rest of the syllabus.
In this post we are providing you MCQ on Krebs Cycle, which will be beneficial for you in upcoming NEET, AIIMS, JIPMER, PGIMER, CBSE Board, ICSE Board, Class 12th, 11th.
MCQ on Krebs Cycle
Q1. ATP synthesis is powered by _______. (c) proton gradient
a) Coenzyme motive force
b) cAMP
c) proton gradient
d) GTP hydrolysis
Q2. Which of the intermediate of the Kreb’s cycle is utilised in the formation of amino acids? (d) 𝛼-ketoglutaric acid
a) Citric acid
b) Malic acid
c) Isocitric acid
d) 𝛼-ketoglutaric acid
Q3. Acetyl CoA is formed from pyruvate by________ reaction. (c) Oxidative decarboxylation
a) Dehydration
b) Reduction
c) Oxidative decarboxylation
d) Dephosphorylation
Q4. Product of Krebs cycle essential for oxidative phosphorylation is _______. (d) NADH and FADH2
a) NADPH and ATP
b) Acetyl CoA
c) CO2 and oxaloacetate
d) NADH and FADH2
Q5. Which of the following is not formed during the Krebs cycle? (a) Lactate
a) Lactate
b) Isocitrate
c) Succinate
d) Both (a) and (b)
Q6. FAD is reduced in which of the reaction of the Kreb’s cycle? (d) Succinate to fumarate
a) Isocitrate to oxaloacetate
b) Succinyl CoA to Succinate
c) Fumarate to malate
d) Succinate to fumarate
Q7. _____ accepts hydrogen from malate. (b) NAD
a) FAD
b) NAD
c) NADP
d)FMN
Q8. Krebs cycle occurs in aerobic respiration due to _______. (a) Electron transport chain requires aerobic conditions to operate
a) Electron transport chain requires aerobic conditions to operate
b) Oxygen is a reactant
c) Oxygen has a catalytic function
d) All of the above
Q9. A single molecule of glucose generates _________ molecules of acetyl CoA, which enters the Krebs cycle. (d) 1
a) 4
b) 3
c) 2
d) 1
Q10. The entry of pyruvate into the TCA cycle is inhibited by the presence of a high cellular concentration of _______. (b) NADH
a) Pyruvate
b) NADH
c) Coenzyme A
d) AMP
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