All of the following statements about glycolysis are true except:

A) Glycolysis has steps involving oxidation-reduction reactions.

B) The enzymes of glycolysis are located in the cytosol of the cell.

C) Glycolysis can operate in the complete absence of O2.

D) The end products of glycolysis are CO2 and H20.

E) Glycolysis makes ATP exclusively through substrate-level phosphorylation.

Question

Biology

Damien

4 March, 14:10

All of the following statements about glycolysis are true except:

A) Glycolysis has steps involving oxidation-reduction reactions.

B) The enzymes of glycolysis are located in the cytosol of the cell.

C) Glycolysis can operate in the complete absence of O2.

D) The end products of glycolysis are CO2 and H20.

E) Glycolysis makes ATP exclusively through substrate-level phosphorylation.

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Answers (1)

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Barbara Clayton · Answer 1

D

Explanation:

The end product of glycolysis is pyruvate. This process occurs in the cytosol of the cell in the absence of oxygen and has a net ATP production of 2 and 2 NADH. When there is no oxygen, the pyruvate is converted to lactic acid. When there is oxygen, the pyruvate is channeled to the Krebs cycle in the mitochondria where it is used to produce more ATP. The formation of ATP in glycolysis is powered by the energy in the bonds of the molecules (substrate-level phosphorylation). This is unlike in Krebs cycle where most of ATP are formed through oxidative phosphorylation. The end products of Krebs cycle is CO₂ and H₂O.