Question 1

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

Question 2

Which of the following are factors that contribute to the large negative standard free energy change for the reaction shown below? 
ATP $\rarr$ ADP + Pi

Accepted Answer

A) the increase in resonance stabilization in the reactants compare to the products 
B) the precipitation of the insoluble Pi 
C) the addition of a water molecule to the hydrophilic ATP molecule 
D) the decrease in negative charge repulsion in the products compared to reactants 
E) all of the above

Question 3

The enzyme inorganic pyrophosphatase catalyzes the hydrolysis of bonds in ___.

Accepted Answer

A) ATP 
B) ADP 
C) AMP 
D) PPi 
E) phosphate

Question 4

Matching
-1,3-Bisphosphoglycerate is an example of a(n)______.

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°’

Question 5

Matching
-A metabolic reaction resulting in the formation of FADH2 is an example of a(n)___ reaction.

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°’

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

Question 7

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

Question 8

Matching
-The study of the complete set of proteins synthesized in the cell in response to changing conditions is 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°’

Question 9

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°’

Question 10

Consider the following metabolic reaction: 
3-Phosphoglycerate $\rarr$ 2-Phosphoglycerate $\Delta$G°' = +4.40 kJ/mol
What is the $\Delta$G for this reaction when the concentration of 2-phosphoglycerate is 0.290 mM and the concentration of 3-phosphoglycerate is 2.90 mM at 37°C?

Accepted Answer

A) +10.3 kJ/mol 
B) -1.53 kJ/mol 
C) -1.30 kJ/mol 
D) -5.93 kJ/mol 
E) -4.40 kJ/mol

Question 11

Consider the following metabolic reaction important in muscle and nerve cells: 
ATP + creatine $\rightleftarrows$ phosphocreatine + ADP $\Delta$G°' = +12.6 kJ/mol
Under intracellular conditions, the $\Delta$G for the reaction, which is catalyzed by the enzyme creatine kinase, is ~0 kJ/mol.From this information we can conclude that

Accepted Answer

A) creatine kinase catalysis would not be necessary under intracellular conditions. 
B) ATP has a greater phosphoryl group transfer potential compared to phosphocreatine. 
C) at equilibrium, most intracellular creatine is phosphorylated. 
D) the reaction operates close to equilibrium in cells. 
E) None of the above is a correct conclusion.

Question 12

Matching
-The enzyme ______ catalyzes the reaction, PPi $\rarr$ 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°’

Exam 14: Introduction to Metabolism

Which of the following are factors that contribute to the large negative standard free energy change for the reaction shown below? ATP $\rarr$ ADP + P_i

The enzyme inorganic pyrophosphatase catalyzes the hydrolysis of bonds in ___.

Matching -1,3-Bisphosphoglycerate is an example of a(n) ______.

Matching -A metabolic reaction resulting in the formation of FADH₂ is an example of a(n) ___ reaction.

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

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

Matching -The study of the complete set of proteins synthesized in the cell in response to changing conditions is called ______.

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

Consider the following metabolic reaction: 3-Phosphoglycerate $\rarr$ 2-Phosphoglycerate $\Delta$ G°' = +4.40 kJ/mol What is the $\Delta$ G for this reaction when the concentration of 2-phosphoglycerate is 0.290 mM and the concentration of 3-phosphoglycerate is 2.90 mM at 37°C?

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

Exam 14: Introduction to Metabolism

Which of the following are factors that contribute to the large negative standard free energy change for the reaction shown below? ATP →\rarr→ ADP + Pi

The enzyme inorganic pyrophosphatase catalyzes the hydrolysis of bonds in ___.

Matching -1,3-Bisphosphoglycerate is an example of a(n) ______.

Matching -A metabolic reaction resulting in the formation of FADH2 is an example of a(n) ___ reaction.

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

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

Matching -The study of the complete set of proteins synthesized in the cell in response to changing conditions is called ______.

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

Consider the following metabolic reaction: 3-Phosphoglycerate →\rarr→ 2-Phosphoglycerate Δ\DeltaΔ G°' = +4.40 kJ/mol What is the Δ\DeltaΔ G for this reaction when the concentration of 2-phosphoglycerate is 0.290 mM and the concentration of 3-phosphoglycerate is 2.90 mM at 37°C?

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

Which of the following are factors that contribute to the large negative standard free energy change for the reaction shown below? ATP $\rarr$ ADP + P_i

Matching -A metabolic reaction resulting in the formation of FADH₂ is an example of a(n) ___ reaction.

Consider the following metabolic reaction: 3-Phosphoglycerate $\rarr$ 2-Phosphoglycerate $\Delta$ G°' = +4.40 kJ/mol What is the $\Delta$ G for this reaction when the concentration of 2-phosphoglycerate is 0.290 mM and the concentration of 3-phosphoglycerate is 2.90 mM at 37°C?

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