Which of the following is the first step of glycolysis?
A) Oxidation of NADH
B) Phosphorylation of glucose
C) Formation of pyruvate
D) Reduction of FAD
B) Phosphorylation of glucose
Answer
What is the net gain of ATP molecules produced during glycolysis per glucose molecule?
A) 1 ATP
B) 2 ATP
C) 3 ATP
D) 4 ATP
B) 2 ATP
Answer
Which enzyme catalyzes the conversion of glucose to glucose-6-phosphate?
A) Hexokinase
B) Phosphofructokinase
C) Aldolase
D) Pyruvate kinase
A) Hexokinase
Answer
During glycolysis, fructose-1,6-bisphosphate is split into which two molecules?
A) Glucose and fructose
B) Dihydroxyacetone phosphate and glyceraldehyde-3-phosphate
C) Pyruvate and lactate
D) Acetyl-CoA and oxaloacetate
B) Dihydroxyacetone phosphate and glyceraldehyde-3-phosphate
Answer
What is the final product of glycolysis?
A) Pyruvate
B) Acetyl-CoA
B) Pyruvate
Answer
Which enzyme is responsible for the substrate-level phosphorylation step in glycolysis that produces ATP?
A) Hexokinase
B) Pyruvate kinase
B) Pyruvate kinase
Answer
In glycolysis, NAD+ is reduced to NADH in which step?
A) Conversion of glucose to glucose-6-phosphate
B) Conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate
B) Conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate
Answer
Which of the following intermediates of glycolysis is a high-energy compound?
A) 1,3-bisphosphoglycerate
B) Fructose-6-phosphate
A) 1,3-bisphosphoglycerate
Answer
The conversion of phosphoenolpyruvate (PEP) to pyruvate is catalyzed by which enzyme?
A) Pyruvate kinase
B) Lactate dehydrogenase
Pyruvate kinase
Answer
How many molecules of NADH are produced per glucose molecule during glycolysis?
A) 1 NADH
B) 2 NADH
B) 2 NADH
Answer