Questions on Fundamentals of Biochemistry Essay example

Submitted By xavierpadilla56
Words: 2194
Pages: 9
Open Document
1.
Which of the following regarding flavin adenine dinucleotide is untrue?
A)
It can participate in one electron reactions
B)
The reactive portion is an isoalloxazine ring
C)
The oxidized form can accept two electrons and two protons
D)
It is often used in the conversion of alkanes to alkenes
E)
The reduced form is FAD

2.
The conversion of pyruvate to lactate requires:
A)
FAD
B)
FADH2
C)
NADH
D)
NAD+
E)
ATP

3.
Which statement about acetyl CoA is untrue?
A)
the acetyl group is linked to CoA by a thioester bond
B)
the free energy of hydrolysis is approximately -7.5 kcal/mole
C)
it is formed via a reaction catalyzed by the pyruvate dehydrogenase complex
D)
acetyl CoA carries an activated acetyl group
E)
acetyl CoA is a carrier of three carbon fragments

4.
The protein which catalyzes the reduction of O2 to H2O in oxidative phosphorylation is:
A)
cytochrome c
B)
an iron-sulfur cluster
C)
cytochrome reductase
D)
Q-cytochrome c oxidoreductase
E)
cytochrome oxidase

5.
The substrate for aconitase is:
A)
succinyl-CoA
B)
citrate
C)
oxalosuccinate
D)
α-ketoglutarate
E)
oxaloacetate

6.
Figure 16-4 shows a reaction. This is catalyzed by:

A) aldolase B) triose phosphate isomerase
C)
glyceraldehyde 3-phosphate dehydrogenase
D)
phosphofructokinase
E)
phosphoglycerate mutase

7.
Consider the reaction A 6 B + C. This reaction has a ΔGo’ value of +3 kcal/mole. It is coupled to a reaction B 6 D with ΔGo’ value of -6 kcal/mole. The percentage of C in the A + C reaction mixture at equilibrium is closest to:
A)
99%
B)
90%
C)
50%
D)
10%
E)
1%

8.
Compounds with high phosphate transfer potential include
A)
phosphoenol pyruvate, acetyl phosphate, and AMP
B)
acetyl phosphate, creatine phosphate and glucose 1-phosphate
C)
phosphoenol pyruvate, acetyl phosphate, and glucose 1-phosphate
D)
acetyl phosphate, phosphoenol pyruvate, and creatine phosphate
E)
creatine phosphate, phosphoenol pyruvate, and glucose 6-phosphate

9.
Loss of CO2 will occur most readily from a:
A)
α-ketoacid
B)
b-ketoacid
C)
β-ketoalcohol (β-hydroxyketone)
D)
1,2-diketone
E)
1,3-diketone

10.
In which step of the citric acid cycle is FADH2 formed?
A)
the conversion of fumarate to malate
B)
the conversion of malate to oxaloacetate
C)
the conversion of succinate to fumarate
D)
the conversion of citrate to isocitrate
E)
the conversion of oxaloacetate to citrate

11.
Figure 17-1. Shown is a figure of:

A) cis-aconitate B) citrate C) isocitrate D) oxalosuccinate E) a-ketoglutarate 12.
Figure 17-2. We did not have time this semester to study the biosynthesis of sedoheptulose. From your knowledge of biochemistry you can say that this is most likely formed by (consider the immediate preceding step):

A) a reaction which uses the co-factor thiamine pyrophosphate
B)
a reaction which uses the co-factor CoASH
C)
aldol condensation of a 3-carbon fragment with a 4-carbon fragment
D)
loss of CO2 from an 8-carbon fragment in which the CO2 was attached to the carbon indicated by the arrow
E)
loss of water from a 7-carbon fragment

13.
Figure 16-3. The structure of isopropylmalate is shown on the last page. From your knowledge of biochemistry, you can say that this is most likely to:

A) be reduced by NADH
B)
be reduced by FADH2
C)
react with TPP
D)
lose CO2
E)
lose water

14.
Figure Amanitin. Amanitin inhibits 5S RNA by 50% at approximately (ng = nanogram; mg = milligram):

A)
1 ng/ml
B)
10 ng/ml
C)
100 ng/ml
D)
0.01 mg/ml
E)
1 mg/ml

15.
Which statement about succinate-Q reductase is untrue?
A)
FADH2 is formed in the citric acid cycle in the oxidation of succinate to fumarate by succinate dehydrogenase
B)
succinate dehydrogenase is part of the succinate-Q reductase complex (Complex II)
C)
the succinate-Q reductase complex is an integral membrane protein of the inner mitochondrial membrane
D)
the electrons from FADH2 are transferred to Fe-S centers and then to ubiquinone for entry into the electron transport chain
E)
FADH2 leaves the complex after
Show More

Related Documents: Questions on Fundamentals of Biochemistry Essay example

Living Environment Honor Article Research Paper

in life with finally developed a method to have the ability to attach chemical probes onto proteins and in time remove them in a repeatable cycle at the University of California. 3. A. Other researchers have a better understanding now of the biochemistry of naturally formed proteins in order to create better antibiotics, anti-cancer drugs, biofuels, food crops and other natural products just because of this process. B. As well that this now provides scientists with a new laboratory tool they can…

Words 740 - Pages 3

Arsenic Susceptibility Essay

Toxicological Sciences 107(2):416–426. 2. State the affiliations of the authors (for example, Department of Biology, Thomas More College). For multi-authored papers (>2 authors), use the first and last author. Department of Molecular Genetics, Biochemistry, and Microbiology, University of Cincinnati College of Medicine 3. Elements of Reasoning a) Point of view: The authors test Drosophila Melanogaster for the purposes of discovering the genetic basis of arsenic susceptibility. They are examining…

Words 1246 - Pages 5

Essay on particle theory

other species, triggering pandemics, disrupting agriculture, and challenging efforts to conserve endangered wildlife. Despite decades of research on species-jumping pathogens, the most central questions in the field remain major stumbling blocks for societies that seek to mitigate their impacts. These questions include which pathogens are most likely to emerge, which hosts are most likely to share pathogens, and what will be the long-term fate of newly emerged pathogens? Part of the challenge is that…

Words 2028 - Pages 9

Essay on Graph Theory

applied to other areas of mathematics, science and technology. It is being actively used in fields as varied as biochemistry (genomics), electrical engineering (communication networks and coding theory), computer science (algorithms and computation) and operations research (scheduling). The powerful combinatorial methods found in graph theory have also been used to prove fundamental results in other areas of pure mathematics. We discuss about computer network security (worm propagation) using…

Words 2034 - Pages 9

Intellectual Property and Biotechnology Essay

Federation of Biotechnology, Biotechnology is the integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services. [4] Biotechnology also writes on the pure biological sciences (animal cell culture, biochemistry, cell biology, embryology, genetics, microbiology, and molecular biology). In many instances, it is also dependent on knowledge and methods from outside the sphere of biology including: • bioinformatics, a new brand of computer science • bioprocess…

Words 1452 - Pages 6

College Success Essay example

because if I have a question I can just go to my professor’s office hours. Going to office hours will help me succeed because if there’s something I am not understanding that the whole class is understanding I can still go and have that one-on-one time where my professor focuses on me and answers any questions I have that way I know what I’m doing by the time the test comes. The challenge will be finding time to go to office hours and convincing myself that even that one small question is worth the walk…

Words 1915 - Pages 8

Estrus Essay

Estrus is a phase of increased female sexual receptivity, proceptivity, and attractiveness that is common amongst mammalian species ( [Lange et al., 2002] and [Lombardi, 1998] as cited in [Miller, Tybur, Jordan, 2007] ). Its purpose appears to be designed to obtain sires of superior genetic quality ( [Gangestad et al., 2005] and [Thornhill, 2006] as cited in [Miller, Tybur, Jordan, 2007] ). Today, estrus in female humans has been said to have disappeared or been hidden over evolutionary time (…

Words 1378 - Pages 6

Research skills Essay

Read thousands of books online, free • Sign up to be notified when new books are published • Purchase printed books • Purchase PDFs • Explore with our innovative research tools Thank you for downloading this free PDF. If you have comments, questions or just want more information about the books published by the National Academies Press, you may contact our customer service department toll-free at 888-624-8373, visit us online, or send an email to comments@nap.edu. This free book plus thousands…

Words 4822 - Pages 20

Freefall: America, Free Markets, And The Sinking Of The World Economy

WCU-DAL HB 3722 .S842 2010 FreeFall: America, free markets, and the sinking of the world economy HB3722 .S842 2010 WCU-DAL REF QR 81 .B46 2001 v.1 Bergy’s Manual of Systematic Bacteriology – 2nd REF QR81 .B46 2001 v.1 WCU-DAL HN 18.3 .B45 2010 c.2 What is social policy: understanding the welfare state HN18.3 .B45 2010 c.2 WCU-DAL RM 301 .A32 2008 WB c.11 Workbook for Pharmacology for Nurses – 2nd ed RM301 .A32 2008 WB c.11 Use the above example for a Regular Book spine…

Words 8628 - Pages 35

2 Curriculum Development and Design Essay

Chapter 2 Chapter 2 Curriculum Development and Design 11 Curriculum Development and Design Sue Baptiste, Patricia Solomon 2 Contents The Pedagogical Framework: Problem-based Learning . . 12 Approaching the Task of Curriculum Renewal . . . . . . . 13 Where to Begin? . . . . . . . . . . . . . . . . . . . . . . . 14 Designing Our New Programs . . . . . . . . . . . . . . . . 16 Redevelopment Within a Problem-based Learning Culture . . . . . . . . . . . . . . . . . . .…

Words 5678 - Pages 23