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BIO 103
BIO 103 - Module 3 Exam Questions with
Correct Verified Answers Latest Update
(2025/2026) Guaranteed Pass
1. _______ Is the initial substrate of glycolysis: glucose
2. _______ is the final product of glycolysis: pyruvate
3. For the net reaction of glycolysis, there is ____ atp formed: 2
4. _______ nadh is formed in the net reaction of glycolysis: 2
5. If there is sufficient oxygen available after glycolysis, pyruvate
will enter the _____: mitochondria
6. If there is not sufficient oxygen available after glycolysis,
pyruvate is converted into _______: lactate
7. Before the citric acid cycle can begin, pyruvate must be
converted (oxidized) to _________: acetyl coa
8. The citric acid cycle completes the breakdown of pyruvate to
______: co2
9. the products from one turn of the citric acid cycle (1 pyruvate
breaking down) is _______: 2co2, 1 atp, 3 nadh, 1 fadh2
BIO 103
, 9. Oxidative phosphorylation accounts for almost _____ %
of the atp generated by cellular respiration: 90
10. For each molecule of glucose, the cell will make _____
molecules of atp during oxidative phosphorylation: 26-28
11. The two processes involved in oxidative
phosphorylation are _______ and
______: electron transport chain and chemiosmosis
12. _____ and _____ are the two electron carriers in the
electron transport chain: nadh and fadh2
13. The etc occurs in the ______ of the mitochondria: cristae
14. The etc components exist in _______ complexes: multi-
protein
15 the electron carriers alternate between ______ and _____
electrons: accepting and donating
16. Electrons drop in ______ as they go down the chain: free
energy
, 17. At the end of the etc, the electrons are passed onto o2
and h+ to form
______: h2o
18. _______ is the protein that moves h+ back and forth
across the membrane: atp synthase
19. _______ is the process that involves the use of energy
in a h+ gradient to drive cellular work: chemiosmosis
20. Describe the flow of energy in the sequence of atp
production through electrons: glucose > nadh > electron
transport chain > proton-motive force > atp 31. There is a total of
______ atp molecules produced from glucose during cellular
respiration: 32
32. Some atp is used during cellular respiration, so the net atp is
____: 30
33. Without oxygen, glycolysis couple with the process of _____:
fermentation 34. In fermentation, the etc will use ______ instead
of oxygen as a final electron receptor: sulfate
, 35. Substrate uses ______ instead of an electron transport chain
to generate
Atp: substrate-level phosphorylation
36. During fermentation, nadh is regenerated in ____: nad+
37. The two common types of fermentation are _____ and _____:
alcohol and
Lactic acid
38. In alcohol fermentation, pyruvate is converted into _____:
ethanol
39. In lactic acid, pyruvate is reduced into _____: nadh
40. When comparing alcohol fermentation to lactic acid
fermentation, specifically the conversion of pyruvate, which
type of fermentation leads to the release of co2?: alcohol
41. ______ is the oxidizing agent that accepts electrons during
glycolysis: -
Nad+
BIO 103
BIO 103 - Module 3 Exam Questions with
Correct Verified Answers Latest Update
(2025/2026) Guaranteed Pass
1. _______ Is the initial substrate of glycolysis: glucose
2. _______ is the final product of glycolysis: pyruvate
3. For the net reaction of glycolysis, there is ____ atp formed: 2
4. _______ nadh is formed in the net reaction of glycolysis: 2
5. If there is sufficient oxygen available after glycolysis, pyruvate
will enter the _____: mitochondria
6. If there is not sufficient oxygen available after glycolysis,
pyruvate is converted into _______: lactate
7. Before the citric acid cycle can begin, pyruvate must be
converted (oxidized) to _________: acetyl coa
8. The citric acid cycle completes the breakdown of pyruvate to
______: co2
9. the products from one turn of the citric acid cycle (1 pyruvate
breaking down) is _______: 2co2, 1 atp, 3 nadh, 1 fadh2
BIO 103
, 9. Oxidative phosphorylation accounts for almost _____ %
of the atp generated by cellular respiration: 90
10. For each molecule of glucose, the cell will make _____
molecules of atp during oxidative phosphorylation: 26-28
11. The two processes involved in oxidative
phosphorylation are _______ and
______: electron transport chain and chemiosmosis
12. _____ and _____ are the two electron carriers in the
electron transport chain: nadh and fadh2
13. The etc occurs in the ______ of the mitochondria: cristae
14. The etc components exist in _______ complexes: multi-
protein
15 the electron carriers alternate between ______ and _____
electrons: accepting and donating
16. Electrons drop in ______ as they go down the chain: free
energy
, 17. At the end of the etc, the electrons are passed onto o2
and h+ to form
______: h2o
18. _______ is the protein that moves h+ back and forth
across the membrane: atp synthase
19. _______ is the process that involves the use of energy
in a h+ gradient to drive cellular work: chemiosmosis
20. Describe the flow of energy in the sequence of atp
production through electrons: glucose > nadh > electron
transport chain > proton-motive force > atp 31. There is a total of
______ atp molecules produced from glucose during cellular
respiration: 32
32. Some atp is used during cellular respiration, so the net atp is
____: 30
33. Without oxygen, glycolysis couple with the process of _____:
fermentation 34. In fermentation, the etc will use ______ instead
of oxygen as a final electron receptor: sulfate
, 35. Substrate uses ______ instead of an electron transport chain
to generate
Atp: substrate-level phosphorylation
36. During fermentation, nadh is regenerated in ____: nad+
37. The two common types of fermentation are _____ and _____:
alcohol and
Lactic acid
38. In alcohol fermentation, pyruvate is converted into _____:
ethanol
39. In lactic acid, pyruvate is reduced into _____: nadh
40. When comparing alcohol fermentation to lactic acid
fermentation, specifically the conversion of pyruvate, which
type of fermentation leads to the release of co2?: alcohol
41. ______ is the oxidizing agent that accepts electrons during
glycolysis: -
Nad+
