6-NADH can yield:
Correct answer: C. 18-ATP
- A. 12-ATP
- B. 38-ATP
- C. 18-ATP
- D. 36-ATP
Explanation
An NADH molecule on oxidation theoretically releases sufficient energy to make 3 ATP molecules. Therefore, 6 molecules of NADH can yield:6 NADH → 6 3 = 18 molecules of ATPThe actual yield of ATP per molecule of NADH is however less. It's 2.5 molecules of ATP/NADH. Therefore, the actual yield of ATP when 6 NADH molecules undergo oxidation is:6 NADH → 6 2.5 = 15 molecules of ATPSince 15 molecules of ATP is not given as an option, the theoretical yield of ATP i.e. 18 molecules (Option C) is the answer.
Last updated
About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
Practise Bioenergetics
1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 NADH in respiratory chain produces:
A marathon runner who trains at altitude increases the capacity of the blood to carry oxygen. The direct benefit to respiration is
About __________ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds?
According to the chemiosmotic theory, ATP is synthesised when
Active transport is dependent on____________?