micro 19

What is the first step of glycolysis?

• Conversion of glucose to glucose-6-phosphate

• Splitting of fructose-1,6-bisphosphate

• Conversion of pyruvate to lactate

• Production of NADH

Which enzyme catalyzes the phosphorylation of fructose-6-phosphate?

• Hexokinase

• Pyruvate kinase

• Phosphofructokinase

• Enolase

What is the total ATP produced during glycolysis (gross yield)?

• 2 ATP

• 4 ATP

• 6 ATP

• 8 ATP

Glycolysis occurs in which part of the cell?

• Nucleus

• Cytoplasm

• Mitochondrial matrix

• Endoplasmic reticulum

What molecule acts as an electron acceptor in glycolysis?

• ATP

• NAD+

• FAD

• ADP

What is the end product of glycolysis?

• Acetyl-CoA

• Lactate

• Pyruvate

• Glucose

How many molecules of NADH are produced per glucose molecule during glycolysis?

• 1

• 2

• 3

• 4

What is the net gain of ATP during glycolysis?

• 1 ATP

• 2 ATP

• 3 ATP

• 4 ATP

What is the fate of pyruvate under anaerobic conditions?

• It is converted to acetyl-CoA.

• It is oxidized to form lactate.

• It is transported into the mitochondria.

• It is reduced to ethanol.

Which enzyme in glycolysis is involved in substrate-level phosphorylation?

• Hexokinase

• Pyruvate kinase

• Phosphoglycerate kinase

• Both b and c