Question 1

The ______ is equal to the rate of synthesis minus the rate of breakdown of the metabolic intermediates.

Accepted Answer

A) metabolic rate 
B) Keq 
C) rate determining step 
D) flux 
E) none of the above 
A) metabolic rate 
B) Keq 
C) rate determining step 
D) flux 
E) none of the above

Question 2

While ____ is always involved in reactions that require the transfer of 2 electrons,____ can participate in reactions that transfer either 1 or 2 electrons.

Accepted Answer

A) O2;NAD+ 
B) NAD+;FAD 
C) NAD+;O2 
D) flavin;niacin 
E) FAD;NAD+ 
A) O2;NAD+ 
B) NAD+;FAD 
C) NAD+;O2 
D) flavin;niacin 
E) FAD;NAD+

Question 3

Matching

-The enzyme ______ catalyzes the transfer of a phosphoryl group from ATP to AMP.

Accepted Answer

A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’ 
A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’

Question 4

Matching

-Biomolecules are synthesized from simpler components in ______ pathways.

Accepted Answer

A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’ 
A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’

Question 5

In the catabolic pathway major nutrients are _________ broken down resulting in the synthesis of __________ .

Accepted Answer

A) exergonically;ADP 
B) endergonically;ADP 
C) exergonically;ATP 
D) endergonically;NADP+ 
E) endergonically;ATP 
A) exergonically;ADP 
B) endergonically;ADP 
C) exergonically;ATP 
D) endergonically;NADP+ 
E) endergonically;ATP

Question 6

Which of the choices correctly ranks the following compounds from lowest level of oxidation to highest level of oxidation?

Accepted Answer

A) 1< 2< 3 
B) 2< 1< 3 
C) 1< 3< 2 
D) 3< 2< 1 
E) 2< 3< 1 
A) 1< 2< 3 
B) 2< 1< 3 
C) 1< 3< 2 
D) 3< 2< 1 
E) 2< 3< 1

Question 7

Matching

-Organisms that require oxygen for nutrient breakdown are called ______.

Accepted Answer

A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’ 
A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’

Question 8

Obligate aerobes

Accepted Answer

A) perish under conditions with O2. 
B) use oxidizing agents such as sulfate or nitrate as a primary food source. 
C) resemble the earliest life forms. 
D) all of the above 
E) none of the above 
A) perish under conditions with O2. 
B) use oxidizing agents such as sulfate or nitrate as a primary food source. 
C) resemble the earliest life forms. 
D) all of the above 
E) none of the above

Question 9

Given that the standard reduction potential of oxaloacetate is -0.166 V and the standard reduction potential of NAD+ is -0.315 V.What is the $\Delta$$\varepsilon$°' for the oxidation of malate by NAD+:
Malate + NAD+ $\to$ Oxaloacetate + NADH + H+

Accepted Answer

A) -4.81 V 
B) + 4.81 V 
C) -0.149 V 
D) +0.149 V 
E) +0.052 V 
A) -4.81 V 
B) + 4.81 V 
C) -0.149 V 
D) +0.149 V 
E) +0.052 V

Question 10

In redox half-reactions,a more positive standard reduction potential means
(I)the oxidized form has a higher affinity for electrons.
(II)the oxidized form has a lower affinity for electrons.
(III)the reduced form has a higher affinity for electrons.
(IV)the greater the tendency for the oxidized form to accept electrons.

Accepted Answer

A) I only 
B) II only 
C) II,III 
D) I,IV 
E) II,IV 
A) I only 
B) II only 
C) II,III 
D) I,IV 
E) II,IV

Question 11

Which of the numbered arrows in the figure points toward a high-energy phosphoanhydride bond?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 12

The terminal electron acceptor in an aerobic organisms is

Accepted Answer

A) CO2. 
B) NAD+. 
C) FAD. 
D) O2. 
E) H2O. 
A) CO2. 
B) NAD+. 
C) FAD. 
D) O2. 
E) H2O.

Question 13

The term "Nutrition" involves which of the following components?
(I)food intake
(II)metabolic utilization of food
(III)the intake requirement of oxygen
(IV)the control of metabolic flux

Accepted Answer

A) I only 
B) II only 
C) I,II 
D) I,II,III 
E) I,II,III,IV 
A) I only 
B) II only 
C) I,II 
D) I,II,III 
E) I,II,III,IV

Question 14

Which compound is in the highest oxidation state?

Accepted Answer

A) carbon monoxide 
B) carbon dioxide 
C) ethanol 
D) A,B,and C are equal 
E) A and B are equal 
A) carbon monoxide 
B) carbon dioxide 
C) ethanol 
D) A,B,and C are equal 
E) A and B are equal

Question 15

Identify the structure pictured below.

Accepted Answer

A) NAD+ 
B) NADH 
C) FAD 
D) FADH2 
E) Coenzyme A (Co
A)  
A) NAD+ 
B) NADH 
C) FAD 
D) FADH2 
E) Coenzyme A (Co
A)

Question 16

I have discovered a new metabolic enzyme which utilizes NAD+ as a coenzyme.Which of the following could be true based on this information?

Accepted Answer

A) It is involved in a catabolic pathway. 
B) It is involved in an anabolic pathway. 
C) It performs acyl group transfer. 
D) It catalyzes a hydrolytic cleavage. 
E) It catalyzes the reduction of the enzyme's substrate. 
A) It is involved in a catabolic pathway. 
B) It is involved in an anabolic pathway. 
C) It performs acyl group transfer. 
D) It catalyzes a hydrolytic cleavage. 
E) It catalyzes the reduction of the enzyme's substrate.

Question 17

The conversion of triacylglycerides into fatty acids for the purpose of energy generation is an example of which of the following?

Accepted Answer

A) heterotropism 
B) anaerobism 
C) catabolism 
D) anabolism 
E) glycolysis 
A) heterotropism 
B) anaerobism 
C) catabolism 
D) anabolism 
E) glycolysis

Question 18

Matching

-The enzyme ______ catalyzes the reaction,PPi $\to$ 2 Pi.

Accepted Answer

A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’ 
A)  anabolic 
B)  adenylate kinase 
C)    
D)  catabolic 
E)  phosphorylase kinase
F) obligate aerobes
G) acyl phosphate
H) proteomics
I) reduction
J) pyrophosphatase
K) autotrophs
L) oxidation
M) ΔG°’

Question 19

A researcher is interested in determining if a long term change in the carbohydrate content of an individual's diet alters the levels of expression of carbohydrate metabolizing enzymes.Which of the following would address this question?

Accepted Answer

A) proteomics 
B) DNA microarrays 
C) genomics 
D) lipidomics 
E) none of the above 
A) proteomics 
B) DNA microarrays 
C) genomics 
D) lipidomics 
E) none of the above

Question 20

ATP contains ________ bonds.

Accepted Answer

A) one phosphoanhydride and two phosphoester 
B) two phosphoester and one glycosidic 
C) three phosphoanhydride 
D) one amide and three phosphoanhydride 
E) one phosphoester and two phosphoanhydride 
A) one phosphoanhydride and two phosphoester 
B) two phosphoester and one glycosidic 
C) three phosphoanhydride 
D) one amide and three phosphoanhydride 
E) one phosphoester and two phosphoanhydride

Exam 14: Introduction to Metabolism

The ______ is equal to the rate of synthesis minus the rate of breakdown of the metabolic intermediates.

While ____ is always involved in reactions that require the transfer of 2 electrons,____ can participate in reactions that transfer either 1 or 2 electrons.

Matching -The enzyme ______ catalyzes the transfer of a phosphoryl group from ATP to AMP.

Matching -Biomolecules are synthesized from simpler components in ______ pathways.

In the catabolic pathway major nutrients are _________ broken down resulting in the synthesis of __________ .

Which of the choices correctly ranks the following compounds from lowest level of oxidation to highest level of oxidation?

Matching -Organisms that require oxygen for nutrient breakdown are called ______.

Obligate aerobes

Given that the standard reduction potential of oxaloacetate is -0.166 V and the standard reduction potential of NAD+ is -0.315 V.What is the Δ\DeltaΔε\varepsilonε °' for the oxidation of malate by NAD+: Malate + NAD+ →\to→ Oxaloacetate + NADH + H+

Which of the numbered arrows in the figure points toward a high-energy phosphoanhydride bond?

The terminal electron acceptor in an aerobic organisms is

The term "Nutrition" involves which of the following components? (I)food intake (II)metabolic utilization of food (III)the intake requirement of oxygen (IV)the control of metabolic flux

Which compound is in the highest oxidation state?

Identify the structure pictured below.

I have discovered a new metabolic enzyme which utilizes NAD+ as a coenzyme.Which of the following could be true based on this information?

The conversion of triacylglycerides into fatty acids for the purpose of energy generation is an example of which of the following?

Matching -The enzyme ______ catalyzes the reaction,PPi →\to→ 2 Pi.

A researcher is interested in determining if a long term change in the carbohydrate content of an individual's diet alters the levels of expression of carbohydrate metabolizing enzymes.Which of the following would address this question?

ATP contains ________ bonds.

Introduction to the Chemistry of Life

Water

Nucleotides, nucleic Acids, and Genetic Information

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, inhibition and Control

Biochemical Signaling

Glucose Catabolism

Glycogen Metabolism and Gluconeogenesis

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

DNA Replication, repair and Recombination

Transcription and Rna Processing

Protein Synthesis

Regulation of Gene Expression

Filters

While is always involved in reactions that require the transfer of 2 electrons, can participate in reactions that transfer either 1 or 2 electrons.

In the catabolic pathway major nutrients are _ broken down resulting in the synthesis of __ .

Given that the standard reduction potential of oxaloacetate is -0.166 V and the standard reduction potential of NAD⁺ is -0.315 V.What is the $\Delta$ $\varepsilon$ °' for the oxidation of malate by NAD⁺: Malate + NAD⁺ $\to$ Oxaloacetate + NADH + H⁺

I have discovered a new metabolic enzyme which utilizes NAD⁺ as a coenzyme.Which of the following could be true based on this information?

Matching -The enzyme ______ catalyzes the reaction,PP_i $\to$ 2 P_i.