Question 1

Which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate in glycolysis?

Accepted Answer

Phosphoglucose isomerase

Question 2

During glycolysis, which step involves the production of ATP via substrate-level phosphorylation?

Accepted Answer

Conversion of phosphoenolpyruvate to pyruvate

Question 3

Which molecule acts as an allosteric inhibitor of phosphofructokinase in glycolysis?

Accepted Answer

ATP

Question 4

What is the net ATP yield from one molecule of glucose during glycolysis?

Accepted Answer

$$2$$

Question 5

Which enzyme is responsible for the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate?

Accepted Answer

Phosphoglycerate kinase

Question 6

In glycolysis, which step is considered the committed step?

Accepted Answer

Conversion of fructose-6-phosphate to fructose-1,6-bisphosphate

Question 7

Which enzyme catalyzes the final step of glycolysis, converting phosphoenolpyruvate to pyruvate?

Accepted Answer

Pyruvate kinase

Question 8

Which intermediate in glycolysis is directly used to generate NADH?

Accepted Answer

Glyceraldehyde-3-phosphate

Question 9

Which enzyme catalyzes the reversible conversion of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate?

Accepted Answer

Triose phosphate isomerase

Question 10

A patient presents with a deficiency in pyruvate kinase. Which of the following symptoms is most likely to occur?

Accepted Answer

Hemolytic anemia

Question 11

Which glycolytic enzyme is regulated by feedback inhibition from its product?

Accepted Answer

Hexokinase

Question 12

Which of the following reactions in glycolysis is irreversible under physiological conditions?

Accepted Answer

Conversion of glucose to glucose-6-phosphate

Question 13

Which enzyme in glycolysis is responsible for the transfer of a phosphate group from ATP to glucose?

Accepted Answer

Hexokinase

Question 14

Which glycolytic intermediate is a high-energy compound that donates a phosphate to ADP?

Accepted Answer

Phosphoenolpyruvate

Question 15

What is the role of enolase in glycolysis?

Accepted Answer

Catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate

Question 16

Which step in glycolysis is bypassed in anaerobic conditions in muscle cells?

Accepted Answer

Conversion of pyruvate to lactate

Question 17

Which enzyme deficiency would most likely lead to an accumulation of fructose-1,6-bisphosphate?

Accepted Answer

Aldolase

Question 18

Which glycolytic enzyme is most directly regulated by AMP levels in the cell?

Accepted Answer

Phosphofructokinase

Question 19

A mutation in the gene encoding phosphoglycerate mutase would most likely affect which step in glycolysis?

Accepted Answer

Conversion of 3-phosphoglycerate to 2-phosphoglycerate

Question 20

Which glycolytic enzyme is responsible for splitting fructose-1,6-bisphosphate into two three-carbon molecules?

Accepted Answer

Aldolase

Overview of Photosynthesis and the Light Reactions

Study Guide - Practice Questions