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Biol 186 UVIC Final (Campbell Biology) with Questions and 100% Correct Verified Solutions
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Biol 186 UVIC Final (Campbell Biology)with Questions and 100% Correct
Verified Solutions
The immediate energy source that drives ATP synthesis by ATP synthase
during oxidative phosphorylation is the
a) oxidation of glucose and other organic compounds.
b) flow of the electrons down the electron transport chain.
c) H+ concentration gradient across the membrane holding ATP synthase.
d) transfer of phosphate to ADP. - Answer c) H+ concentration gradient across the
membrane holding ATP synthase.
Which metabolic pathway is common to both fermentation and cellular respiration of
a glucose molecule?
a) the citric acid cycle.
b) the electron transport chain
c) glycolysis
d) reduction of pyruvate to lactate - Answer c) glycolysis
In mitochondria, exergonic redox reactions
a) are the source of energy driving prokaryotic ATP synthesis.
b) provide the energy that establishes the proton gradient.
c) reduce carbon atoms to carbon dioxide.
,d) are coupled via phosphorylated intermediates to endergonic processes. - Answer
b) provide the energy that establishes the proton gradient.
The final electron acceptor of the electron transport chain that functions in
aerobic oxidative phosphorylation is
a) oxygen
b) water
c) NAD+
d) pyruvate - Answer a) oxygen
What is the oxidizing agent in the following reaction?
Pyruvate + NADH + H+ -> Lactate + NAD+
a) oxygen
b) NADH
c) lactate
d) pyruvate - Answer d) pyruvate
When electrons flow along the electron transport chains of mitochondria, which of the
following changes occur?
a) the pH of the matrix increases.
b) ATP synthase pumps protons by active transport.
c) the electrons gain free energy.
d) NAD+ is oxidized. - Answer a) the pH of the matrix increases.
Most CO2 from catabolism is released during
a) glycolysis
b) the citric acid cycle
, c) lactate fermentation
d) electron transport - Answer b) the citric acid cycle
The light reactions of photosynthesis supply the Calvin cycle with
a) light energy
b) CO2 and ATP
c) H2O and NADPH
d) ATP and NADPH - Answer d) ATP and NADPH
Which of the following sequences correctly represents the flow of electrons during
photosynthesis?
a) NADPH -> O2CO2
b) H2O -> NADPH -> Calvin cycle
c) H2O -> Photosystem I -> Photosystem II
d) NADPH -> Electron transport chain -> O2 - Answer b) H2O -> NADPH -> Calvin cycle
How is photosynthesis similar in C4 plants and CAM plants?
a) in both cases, only Photosystem I is used.
b) both types of plants make sugar without the Calvin cycle.
c) in both cases, rubisco is not used to fix carbon initially.
d) both types of plants make most of their sugar in the dark. - Answer c) in both
cases, rubisco is not used to fix carbon initially.
Which of the following statements is a correct distinction between autotrophs and
heterotrophs?
a) autotrophs, but not heterotrophs, can nourish themselves, beginning with CO2 and
other nutrients that are inorganic.
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