1. What is the main carbon-containing end product of glycolysis from one glucose molecule?
A.
Two pyruvate molecules
B.
One pyruvate molecule
C.
Two acetyl-CoA molecules
D.
One lactate molecule
Correct Answer:
Two pyruvate molecules
Explanation:
One glucose molecule is converted into two pyruvate molecules during glycolysis.
2. How many pyruvate molecules are produced from one glucose molecule during glycolysis?
A.
One
B.
Two
C.
Three
D.
Four
Correct Answer:
Two
Explanation:
A six-carbon glucose molecule is converted into two three-carbon pyruvate molecules.
3. What is the net ATP production from one glucose molecule during glycolysis?
A.
One ATP
B.
Two ATP
C.
Four ATP
D.
Six ATP
Correct Answer:
Two ATP
Explanation:
Glycolysis produces four ATP but uses two ATP, giving a net gain of two ATP per glucose molecule.
4. Which reduced electron carrier is produced during glycolysis?
A.
NADH
B.
FADH2
C.
NADPH
D.
ATP synthase
Correct Answer:
NADH
Explanation:
Glycolysis produces NADH when NAD+ accepts hydrogen and electrons.
5. How many NADH molecules are produced from one glucose molecule during glycolysis?
A.
One
B.
Two
C.
Three
D.
Four
Correct Answer:
Two
Explanation:
Two NADH molecules are formed for each glucose molecule broken down by glycolysis.
6. Which combination represents the main net products of glycolysis from one glucose molecule?
A.
Two pyruvate, two NADH, and two ATP
B.
One pyruvate, one NADH, and four ATP
C.
Two acetyl-CoA, two FADH2, and two ATP
D.
Six carbon dioxide, two NADH, and four ATP
Correct Answer:
Two pyruvate, two NADH, and two ATP
Explanation:
The net products of glycolysis per glucose are two pyruvate molecules, two NADH molecules, and two ATP molecules.
7. What is the net gain of ATP when one molecule of glucose completes glycolysis?
A.
No ATP
B.
One ATP
C.
Two ATP
D.
Four ATP
Correct Answer:
Two ATP
Explanation:
The net ATP gain is two because four ATP are formed while two ATP are consumed.
8. Which substance is not a net end product of glycolysis?
A.
Pyruvate
B.
NADH
C.
ATP
D.
Acetyl-CoA
Correct Answer:
Acetyl-CoA
Explanation:
Acetyl-CoA is not a direct end product of glycolysis; glycolysis ends with the formation of pyruvate.
9. How many carbon atoms are present in each pyruvate molecule produced by glycolysis?
A.
Two
B.
Three
C.
Four
D.
Six
Correct Answer:
Three
Explanation:
Each glucose molecule has six carbon atoms and produces two three-carbon pyruvate molecules.
10. Which pair of molecules is formed as energy-related products during glycolysis?
A.
ATP and NADH
B.
FADH2 and carbon dioxide
C.
Acetyl-CoA and oxygen
D.
Lactate and FADH2
Correct Answer:
ATP and NADH
Explanation:
Glycolysis produces ATP directly and also forms NADH as an electron-carrying product.
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