BIOD 101 MODULE 3 Q&A | PORTAGE LEARNING |

2026-2027 PORTAGE BIOD 101
MODULE 3 EXAM WITH CORRECT
ANSWERS



Chemical reactions of metabolic processes - CORRECT ANSWERS-
(1) redox reactions, (2) dehydration condensation reactions, (3)
dehydration reactions and (4) hydrolysis reactions.



Redox Reaction - CORRECT ANSWERS- Involve transfer of
electrons from a substrate which is oxidized, to another substance
which is reduced



G3P Intermediate Phase - CORRECT ANSWERS- G3P is oxidized as
electrons are transferred to NAD* forming NADH



triose phosphate isomerase - CORRECT ANSWERS- Converts G3P
to (2) 1,3-biphosphoglycerate



Phosphoglycerokinase - CORRECT ANSWERS- Transfers
phosphate group from (2) 3-biphosphoglycerate to (2) ADP,
generating (2) ATP and (2) 3-Phosphoglycerate

, substrate-level phosphorylation - CORRECT ANSWERS- Metabolic
formation of ATP by directly transferring a phosphate group from
an organic substance



Phosphoglycermutase - CORRECT ANSWERS- Converts 3-
Phosphoglycerate to 2-Phosphoglycerate



Enolase - CORRECT ANSWERS- Catalyzes dehydration reaction,
forming phosphophenolpyruvate (PEP)



pyruvate kinase - CORRECT ANSWERS- Transfers phosphate
group from PEP to ADP, generating (2) ATP and (2) pyruvate



Glucose path in energy payoff phase - CORRECT ANSWERS- 5.
G3P (yield 2 NADH)

6. 1,3-biphosphoglycerate (yield 2 ATP)

7. 3-phosphoglycerate

8. 2-phosphoglycerate

9. phosphophenylpyruvate (PEP)

10. Pyruvate (2) (also yield 2 ATP)



Enzyme path in energy payoff phase - CORRECT ANSWERS- 6.
Triose phosphate

7. Phosphoglycerokinase

8. Phosphoglycermutase