BIOS 150 General Biology with Lab Exam
2(Latest Update ) Anatomy
and Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the main function of enzymes?
A. Store energy
B. Speed up reactions
C. Store DNA
D. Transport oxygen
Correct Answer: B. Speed up reactions
Rationale: Enzymes are biological catalysts that increase the rate of
chemical reactions.
2. What affects enzyme activity the most?
A. Color
B. Temperature and pH
C. Shape only
D. Light
,Correct Answer: B. Temperature and pH
Rationale: Enzymes have optimal temperature and pH ranges for
proper function.
3. What is the substrate in an enzyme reaction?
A. Product
B. Reactant
C. Catalyst
D. Energy
Correct Answer: B. Reactant
Rationale: The substrate is the molecule upon which the enzyme
acts.
4. What happens when an enzyme denatures?
A. Becomes stronger
B. Loses shape
C. Gains energy
D. Replicates
Correct Answer: B. Loses shape
Rationale: Denaturation alters the enzyme’s structure, reducing its
function.
5. What is the active site?
A. Protein tail
B. Binding region
,C. DNA region
D. Membrane
Correct Answer: B. Binding region
Rationale: The active site is where the substrate binds on the
enzyme.
6. What is cellular respiration?
A. Making glucose
B. Breaking down glucose for energy
C. Making proteins
D. DNA replication
Correct Answer: B. Breaking down glucose for energy
Rationale: Cellular respiration converts glucose into ATP.
7. Where does glycolysis occur?
A. Nucleus
B. Cytoplasm
C. Mitochondria
D. Ribosome
Correct Answer: B. Cytoplasm
Rationale: Glycolysis takes place in the cytoplasm.
8. What is produced in glycolysis?
A. Oxygen
B. ATP
, C. Water only
D. DNA
Correct Answer: B. ATP
Rationale: Glycolysis produces a small amount of ATP.
9. What is the Krebs cycle also called?
A. Calvin cycle
B. Citric acid cycle
C. Light reaction
D. Glycolysis
Correct Answer: B. Citric acid cycle
Rationale: Another name for the Krebs cycle is the citric acid cycle.
10. Where does the Krebs cycle occur?
A. Cytoplasm
B. Nucleus
C. Mitochondria
D. Ribosome
Correct Answer: C. Mitochondria
Rationale: The Krebs cycle occurs in the mitochondrial matrix.
11. What is the final electron acceptor in respiration?
A. Carbon dioxide
B. Oxygen
C. Glucose
2(Latest Update ) Anatomy
and Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the main function of enzymes?
A. Store energy
B. Speed up reactions
C. Store DNA
D. Transport oxygen
Correct Answer: B. Speed up reactions
Rationale: Enzymes are biological catalysts that increase the rate of
chemical reactions.
2. What affects enzyme activity the most?
A. Color
B. Temperature and pH
C. Shape only
D. Light
,Correct Answer: B. Temperature and pH
Rationale: Enzymes have optimal temperature and pH ranges for
proper function.
3. What is the substrate in an enzyme reaction?
A. Product
B. Reactant
C. Catalyst
D. Energy
Correct Answer: B. Reactant
Rationale: The substrate is the molecule upon which the enzyme
acts.
4. What happens when an enzyme denatures?
A. Becomes stronger
B. Loses shape
C. Gains energy
D. Replicates
Correct Answer: B. Loses shape
Rationale: Denaturation alters the enzyme’s structure, reducing its
function.
5. What is the active site?
A. Protein tail
B. Binding region
,C. DNA region
D. Membrane
Correct Answer: B. Binding region
Rationale: The active site is where the substrate binds on the
enzyme.
6. What is cellular respiration?
A. Making glucose
B. Breaking down glucose for energy
C. Making proteins
D. DNA replication
Correct Answer: B. Breaking down glucose for energy
Rationale: Cellular respiration converts glucose into ATP.
7. Where does glycolysis occur?
A. Nucleus
B. Cytoplasm
C. Mitochondria
D. Ribosome
Correct Answer: B. Cytoplasm
Rationale: Glycolysis takes place in the cytoplasm.
8. What is produced in glycolysis?
A. Oxygen
B. ATP
, C. Water only
D. DNA
Correct Answer: B. ATP
Rationale: Glycolysis produces a small amount of ATP.
9. What is the Krebs cycle also called?
A. Calvin cycle
B. Citric acid cycle
C. Light reaction
D. Glycolysis
Correct Answer: B. Citric acid cycle
Rationale: Another name for the Krebs cycle is the citric acid cycle.
10. Where does the Krebs cycle occur?
A. Cytoplasm
B. Nucleus
C. Mitochondria
D. Ribosome
Correct Answer: C. Mitochondria
Rationale: The Krebs cycle occurs in the mitochondrial matrix.
11. What is the final electron acceptor in respiration?
A. Carbon dioxide
B. Oxygen
C. Glucose
