Each molecule of NADH2 entering the electron transport chain produces:
Correct answer: D. Three ATPs
- A. Four ATPs
- B. Two ATPs
- C. One ATP
- D. Three ATPs
Explanation
Three ATPs: This is the correct option. Each NADH molecule generally leads to the synthesis of around three ATP molecules in the electron transport chain. However, the exact ATP yield can vary based on cellular conditions and ATP production efficiency. Therefore, each NADH molecule typically results in the production of approximately three ATP molecules. Options A, B, and C are incorrect because NADH does not directly produce four, two, or one ATPs, respectively.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
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.
More Cellular Respiration questions
What happens to oxygen in the electron transport chain?
Which one of the bonds is broken first in glycolysis to release energy?
The step in glycolysis in which energy transfer is not involved is:
The process responsible for energy production in animals is:
Glycolysis completes with the net gain of:
The conversion of excess glucose into fat is known as: