Question 1

The vitamin ______ is one of the components of coenzyme A, which is involved in _____.

Accepted Answer

A) pantothenic acid; carboxylation 
B) pantothenic acid; acyl transfer 
C) cobalamin; acyl transfer 
D) riboflavin; carboxylation 
E) niacin; electron transfer 
A) pantothenic acid; carboxylation 
B) pantothenic acid; acyl transfer 
C) cobalamin; acyl transfer 
D) riboflavin; carboxylation 
E) niacin; electron transfer B

Question 2

What type of metabolic control is described in the figure below?

Accepted Answer

A) feed forward activation 
B) product Inhibition 
C) feedback Inhibition 
D) hormonal control 
E) signal transduction control 
A) feed forward activation 
B) product Inhibition 
C) feedback Inhibition 
D) hormonal control 
E) signal transduction control C

Question 3

Consider the following metabolic reaction: Succinyl-CoA + Acetoacetate  $\rarr$Acetoacetyl-CoA + Succinate $\Delta$G°' = -1.25 kJ/mol
The $\Delta$G°' for the hydrolysis of Succinyl-CoA is -33.9 kJ/mol.What is the $\Delta$G°' for the hydrolysis of Acetoacetyl-CoA: Acetoacetyl-CoA $\rarr$ Acetoacetate + CoA

Accepted Answer

A) -35.2 kJ/mol 
B) -32.7 kJ/mol 
C) +32.7 kJ/mol 
D) +35.2 kJ/mol 
E) none of the above 
A) -35.2 kJ/mol 
B) -32.7 kJ/mol 
C) +32.7 kJ/mol 
D) +35.2 kJ/mol 
E) none of the above B

Question 4

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 5

Organisms that can grow in either the presence or absence of oxygen are classified as

Accepted Answer

A) obligate aerobes 
B) facultative anaerobes 
C) autotrophs 
D) heterotrophs 
E) obligate anaerobes 
A) obligate aerobes 
B) facultative anaerobes 
C) autotrophs 
D) heterotrophs 
E) obligate anaerobes

Question 6

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 7

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 8

Consider the following metabolic reaction: 
2-Phosphoglycerate $\rarr$3-Phosphoglycerate $\Delta$G°' = −4.40 kJ/mol
What can be said about this reaction when the concentration of 2-phosphoglycerate is 0.490 mM and the concentration of 3-phosphoglycerate is 2.90 mM at 25°C?
I.This reaction is endergonic under these conditions.
II.This reaction is exergonic under these conditions.
III.This reaction is at equilibrium under these conditions.
IV.This reaction is not favorable under standard conditions.

Accepted Answer

A) I, IV 
B) II only 
C) III only 
D) IV only 
E) None of the above 
A) I, IV 
B) II only 
C) III only 
D) IV only 
E) None of the above

Question 9

What are the correct coenzyme forms that correspond to X and Y in the following reaction as catalyzed by lactate dehydrogenase? 
Pyruvate + X → Lactate + Y

Accepted Answer

A) X = NADH , Y = NAD+ 
B) X = NADPH , Y = NADP+ 
C) X = NAD+ , Y = NADH 
D) X = FAD , Y = FADH2 
E) X = NADH , Y = NADP+ 
A) X = NADH , Y = NAD+ 
B) X = NADPH , Y = NADP+ 
C) X = NAD+ , Y = NADH 
D) X = FAD , Y = FADH2 
E) X = NADH , Y = NADP+

Question 10

NADH is a derivative of

Accepted Answer

A) niacin. 
B) riboflavin. 
C) lipoic acid. 
D) thiamine. 
E) vitamin A. 
A) niacin. 
B) riboflavin. 
C) lipoic acid. 
D) thiamine. 
E) vitamin A.

Question 11

Matching
-The reaction NADH  $\rarr$NAD+ is an example of _____.

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 12

Matching
-The standard reduction potential under biochemical standard state conditions is symbolized as ______.

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 13

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$$\epsilon$°' for the oxidation of malate by NAD+: 
Malate + NAD+ $\rarr$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 14

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 15

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 16

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 17

If Z = ATP formed via substrate level phosphorylation in the diagram below, which of the following compounds (represented by an uppercase letter)contains a high-energy bond?

Accepted Answer

A) Compound A 
B) Compound B 
C) Compound C 
D) All have equally high energy. 
E) All have equally low energy. 
A) Compound A 
B) Compound B 
C) Compound C 
D) All have equally high energy. 
E) All have equally low energy.

Question 18

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

Question 19

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 20

Negative feedback inhibition is one type of _______ metabolic control.

Accepted Answer

A) allosteric 
B) hormonal 
C) covalent modification 
D) genetic 
E) signal transduction 
A) allosteric 
B) hormonal 
C) covalent modification 
D) genetic 
E) signal transduction

Exam 14: Introduction to Metabolism

The vitamin ______ is one of the components of coenzyme A, which is involved in _____.

What type of metabolic control is described in the figure below?

The terminal electron acceptor in an aerobic organisms is

Organisms that can grow in either the presence or absence of oxygen are classified as

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

Identify the structure pictured below.

What are the correct coenzyme forms that correspond to X and Y in the following reaction as catalyzed by lactate dehydrogenase? Pyruvate + X → Lactate + Y

NADH is a derivative of

Matching -The reaction NADH →\rarr→ NAD+ is an example of _____.

Matching -The standard reduction potential under biochemical standard state conditions is symbolized as ______.

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\epsilonϵ °' for the oxidation of malate by NAD+: Malate + NAD+ →\rarr→ Oxaloacetate + NADH + H+

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

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

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

If Z = ATP formed via substrate level phosphorylation in the diagram below, which of the following compounds (represented by an uppercase letter)contains a high-energy bond?

ATP contains ________ bonds.

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

Negative feedback inhibition is one type of _______ metabolic control.

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

Glycogen Metabolism and Gluconeogenesis

Glucose Catabolism

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

Translation

Regulation of Gene Expression

Filters

The vitamin __ is one of the components of coenzyme A, which is involved in _.

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 reaction NADH $\rarr$ NAD⁺ is an example 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 $\Delta$ $\epsilon$ °' for the oxidation of malate by NAD⁺: Malate + NAD⁺ $\rarr$ Oxaloacetate + NADH + H⁺

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