Question 1:

Which process is responsible for the production of ATP in cells?

Explanation: The production of ATP in cells occurs through all three processes: glycolysis, Krebs cycle, and electron transport chain. Therefore, option D is correct.

Question 2:

Which molecule is the final electron acceptor in the electron transport chain?

Explanation: Oxygen (O2) is the final electron acceptor in the electron transport chain. Therefore, option C is correct.

Question 3:

Which process occurs in the cytoplasm and does not require oxygen?

Explanation: Glycolysis is the process that occurs in the cytoplasm and does not require oxygen. Therefore, option A is correct.

Question 4:

Which step of cellular respiration produces the most ATP?

Explanation: The electron transport chain produces the most ATP during cellular respiration. Therefore, option C is correct.

Question 5:

Which molecule is the starting substrate for the Krebs cycle?

Explanation: Acetyl-CoA is the starting substrate for the Krebs cycle. Therefore, option C is correct.