(Accelerated only) What is wrong with the following statement?Glucose enters glycolysis and produces pyruvate. The pyruvate then enters the Krebs cycle where it produces many NADH. The NADH then go to ETC where ATP is then created.

CELL RESPIRATION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	Glucose does not enter glycolysis.
B	Krebs cycle produces ATP
C	ETC comes before Krebs
D	Pyruvate does not enter Krebs cycle

Explanation:

Detailed explanation-1: -FADH2 is not produced during glycolysis. It is produced during Krebs cycle. Hence, Option D is correct.

Detailed explanation-2: -Answer and Explanation: The statement that is not true regarding glycolysis is c. Glycolysis can occur in the cytoplasm of the cell or the mitochondria. Glycolysis only occurs in the cytosol or cytoplasm of the cells and not in the mitochondria.

Detailed explanation-3: -Products and Functions of the Krebs Cycle For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced.

Detailed explanation-4: -The correct answer is e. The statement regarding glycolysis which is true is oxygen is not required. In the process of glycolysis, oxygen is not required because it is an anaerobic process that is independent of oxygen.

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AP BIOLOGY

LABORATORY REVIEW

CELL RESPIRATION