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Which letter(s) is/are incorrect.

A. produces two molecules of ATP
B. only takes place in yeast and bacteria
C. takes place in the inner-membrane of the mitochondria
D. requires oxygen
E. breaks glucose into pyruvate
F. takes place in the cytoplasm (cytosol)

1 Answer

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Final answer:

The letters B, C, and D contain incorrect statements regarding the process of glycolysis. Glycolysis occurs in all living cells, takes place in the cytosol, and does not require oxygen.

Step-by-step explanation:

The question pertains to the steps of cellular respiration, a metabolic process that occurs within cells. The statements given each describe characteristics of specific stages in this process. The correct and incorrect statements can be addressed as follows:

  1. A. produces two molecules of ATP: This is partially incorrect because glycolysis produces four ATP molecules but two are used up, so the net gain is two molecules of ATP. In the case of the entire cellular respiration process, more ATP is produced during the electron transport chain.
  2. B. only takes place in yeast and bacteria: This statement is incorrect. Glycolysis occurs in virtually all living cells, not just yeast and bacteria.
  3. C. takes place in the inner-membrane of the mitochondria: This is incorrect when referring to glycolysis as it occurs in the cytoplasm. However, the description fits oxidative phosphorylation.
  4. D. requires oxygen: This is incorrect for glycolysis, which is an anaerobic process and does not require oxygen. However, oxygen is required for oxidative phosphorylation which is the final stage of cellular respiration.
  5. E. breaks glucose into pyruvate: This statement is correct; it happens during glycolysis.
  6. F. takes place in the cytoplasm (cytosol): This statement is correct as glycolysis occurs in the cytoplasm of both prokaryotic and eukaryotic cells.

Therefore, letters B, C, and D contain incorrect statements in the context of glycolysis.

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