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Midterm

01:694:301 Study Guide - Midterm Guide: Succinate Dehydrogenase, Pyruvate Dehydrogenase, Coenzyme Q10Exam


Department
Molecular Biology and Biochemistry
Course Code
01:694:301
Professor
F Deis
Study Guide
Midterm

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Quick-Assessment Review
BIO
Instructions
BIO
Go to : http://
This assessment is worth 30 points.
The reaction process catalyzed by pyruvate dehydrogenase requires all of the
following except _______.
1.
(1 point)
TPPa.
FMNb.
CoASHc.
NAD+
d.
Lipoic acide.
All of the following are components of the electron transport chain except
______________ .
2.
(1 point)
Coenzyme Qa.
Succinate dehydrogenaseb.
Coenzyme Ac.
Cytochrome cd.
NADH dehydrogenasee.
The ETC component that transfers electrons directly to oxygen is ______________.3.
(1 point)
Cyt ca.
UQb.
Cyt bc1
c.
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cytochrome oxidased.
succinate dehydrogenasee.
During the oxidation of NADH there are several steps in which DEo' is sufficient for
ATP synthesis. These occur within
4.
(1 point)
Complexes I, II and III.a.
Complexes I, III, and IV.b.
Complexes II, III, and IV.c.
Complexes III, IV and V.d.
Complexes I, II and IV.e.
Which of the following molecules inhibits Complex I of the electron transport chain?5.
(1 point)
Azidea.
Amytalb.
Cyanidec.
Arsenicd.
Carbon monoxidee.
ATP synthesis and mitochondrial electron transport are coupled by6.
(1 point)
protonmotive force.a.
high energy intermediates.b.
proton gradient.c.
Both A and C are correct.d.
All of the above are correct.e.
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Evidence supporting the chemiosmotic theory includes all of the following except7.
(1 point)
Inhibitors of ATP synthesis have been shown to dissipate the proton gradient.a.
Mitochondria with disrupted membranes cannot synthesize ATP.b.
ATP synthesis is depressed when mitochondrial swelling occurs as a result of
osmotic changes.
c.
The pH of a weakly buffered suspension of mitochondria rises when O2 is
added.
d.
Actively respiring mitochondria expel protons.e.
Examples of uncouplers include _____________.8.
(1 point)
DNPa.
antimycinb.
gramicidinc.
Both A and B are correct.d.
Both A and C are correct.e.
In the ATP Synthase the Fo factor9.
(1 point)
has three types of subunits.a.
possesses ATPase activity.b.
is a transmembrane proton channel.c.
Both A and B are correct.d.
Both A and C are correct.e.
The maximum P/O ratio for FADH2 is ______________ .10.
(1 point)
1.5a.
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