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BIOD 101 Module 3 Exam Portage Learning|| LATEST
2025/ 2026 ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||LATEST UPDATE!!!||
The first step of the CAC is a ____________ phase
sometimes simply called ______ oxidation. - ANSWER-
preparation; pyruvate
True or False: The electron transport chain is an anabolic
pathway. - ANSWER-False; the electron transport chain is
catabolic pathway
How does the electron transport chain generate ATP? -
ANSWER-Notably, the ETC does not directly produce any
ATP. However, establishing a proton gradient across the
mitochondrial membrane will lead to the production of ATP
via ATP synthase
Explain the process of oxidative phosphorylation. -
ANSWER-Oxidative phosphorylation is the process of
generating ATP via a two-step process that involves (1)
the oxidation of the high-energy end products NADH and
FADH2 from the CAC and (2) the phosphorylation and
conversion of ADP into ATP
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What role do electron carriers play in the electron
transport chain and what are the 3 electron carriers of the
chain? - ANSWER-Electron carriers experience changes
in electronegativity as they accept (reduced) and then
donate (oxidized) electrons. Ubiquinone, cytochromes,
and oxygen are the electron carriers of the electron
transport chain
What is the role of ATP synthase in the electron transport
chain? - ANSWER-The ATP synthase is responsible for
generating ATP through chemiosmosis. Chemiosmosis is
an energy-coupling process which harnesses the energy
that exists within the proton ion gradient and uses it to
drive ATP synthesis
What are the two main forms of fermentation? - ANSWER-
Fermentation is the catabolic process of breaking down
glucose for energy and can be divided into two main forms
(1) alcohol fermentation and (2) lactic acid fermentation
True or false; it's false, make a statement. True: oxygen is
the final electron, except are in the etc in anaerobic
respiration. - ANSWER-False, oxygen is the final electron,
except are in the etc in aerobic respiration
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Which of the following chemical reactions requires energy
and occurs when two or more monomers are joined
together, resulting in the loss of a water molecule, and
possibly other small molecules? - ANSWER-Dehydration
condensation
What is another name for the citric acid cycle? -
ANSWER-Krebs cycle
__________ refers ti the sum of all the energy-releasing
degradation biochemical reactions, while _________
refers to the sum of all the synthetic energy-requiring
biochemical reactions - ANSWER-catabolism, anabolism
Citrate is produced during what reaction of the citric acid
cycle - ANSWER-Reaction one
Glucose 6-phosphate - ANSWER-high energy
intermediate formed by hexokinase
Fructose 1,6-Biphosphate - ANSWER-Produced by
phosphofructokinase
BIOD 101 Module 3 Exam Portage Learning|| LATEST
2025/ 2026 ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||LATEST UPDATE!!!||
The first step of the CAC is a ____________ phase
sometimes simply called ______ oxidation. - ANSWER-
preparation; pyruvate
True or False: The electron transport chain is an anabolic
pathway. - ANSWER-False; the electron transport chain is
catabolic pathway
How does the electron transport chain generate ATP? -
ANSWER-Notably, the ETC does not directly produce any
ATP. However, establishing a proton gradient across the
mitochondrial membrane will lead to the production of ATP
via ATP synthase
Explain the process of oxidative phosphorylation. -
ANSWER-Oxidative phosphorylation is the process of
generating ATP via a two-step process that involves (1)
the oxidation of the high-energy end products NADH and
FADH2 from the CAC and (2) the phosphorylation and
conversion of ADP into ATP
,2|Page
What role do electron carriers play in the electron
transport chain and what are the 3 electron carriers of the
chain? - ANSWER-Electron carriers experience changes
in electronegativity as they accept (reduced) and then
donate (oxidized) electrons. Ubiquinone, cytochromes,
and oxygen are the electron carriers of the electron
transport chain
What is the role of ATP synthase in the electron transport
chain? - ANSWER-The ATP synthase is responsible for
generating ATP through chemiosmosis. Chemiosmosis is
an energy-coupling process which harnesses the energy
that exists within the proton ion gradient and uses it to
drive ATP synthesis
What are the two main forms of fermentation? - ANSWER-
Fermentation is the catabolic process of breaking down
glucose for energy and can be divided into two main forms
(1) alcohol fermentation and (2) lactic acid fermentation
True or false; it's false, make a statement. True: oxygen is
the final electron, except are in the etc in anaerobic
respiration. - ANSWER-False, oxygen is the final electron,
except are in the etc in aerobic respiration
, 3|Page
Which of the following chemical reactions requires energy
and occurs when two or more monomers are joined
together, resulting in the loss of a water molecule, and
possibly other small molecules? - ANSWER-Dehydration
condensation
What is another name for the citric acid cycle? -
ANSWER-Krebs cycle
__________ refers ti the sum of all the energy-releasing
degradation biochemical reactions, while _________
refers to the sum of all the synthetic energy-requiring
biochemical reactions - ANSWER-catabolism, anabolism
Citrate is produced during what reaction of the citric acid
cycle - ANSWER-Reaction one
Glucose 6-phosphate - ANSWER-high energy
intermediate formed by hexokinase
Fructose 1,6-Biphosphate - ANSWER-Produced by
phosphofructokinase
