Question 1

Chemiosmotic coupling refers to

Accepted Answer

A)  chemical coupling of each reaction within the mitochondria.
B)  coupling of the Krebs cycle to the electron transport chain.
C)  the transfer of a phosphate group from one molecule to another.
D)  chemical coupling between substrate and enzymes.
E)  the harnessing of energy from the reactions of the electron transport chain to make ATP.F) B) and D)
G) A) and E)

Question 2

Complete oxidation of 1 mole glucose produces 6 moles of water and 6 moles of carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 3

Glucose is stored in the form of glycogen primarily within what two organs?

Accepted Answer

A)  pancreas and small intestine
B)  stomach and small intestine
C)  liver and pancreas
D)  small and large intestine
E)  skeletal muscles and liverF) None of the above
G) B) and C)

Question 4

In a metabolic pathway, the enzyme working the slowest in that pathway is known as the enzyme.

Accepted Answer

A)  modulating
B)  allosteric regulating
C)  inhibitor
D)  binding
E)  rate- limitingF) C) and D)
G) B) and C)

Question 5

Under anaerobic conditions, what is pyruvate converted to and where does this occur?

Accepted Answer

A)  acetyl coenzyme A in the cytosol
B)  lactate in the cytosol
C)  acetyl coenzyme A in the mitochondria
D)  fatty acid in the cytosol
E)  lactate in the mitochondriaF) A) and B)
G) D) and E)

Question 6

A single enzyme could be simultaneously affected by both allosteric regulation and covalent regulation.

Accepted Answer

A) True 
 B)False

Question 7

A substrate is the same as a

Accepted Answer

A)  reactant.
B)  ligand.
C)  product.
D)  liquid.
E)  solute.F) C) and E)
G) None of the above

Question 8

If the energy change of a reaction (OE) is positive, then

Accepted Answer

A)  the reactants had more energy than the products.
B)  the products had more energy than reactants.
C)  no energy was added to the reaction.
D)  the reactants had the same energy as the products.
E)  energy has been released as a byproduct.F) A) and E)
G) D) and E)

Question 9

What is the final acceptor of electrons in the electron transport?

Accepted Answer

A)  water
B)  pyruvate
C)  glucose
D)  carbon dioxide
E)  oxygenF) A) and D)
G) B) and D)

Question 10

An increase in temperature increases the potential energy of molecules.

Accepted Answer

A) True 
 B)False

Question 11

A reaction is at equilibrium when the rates of the forward and reverse reactions are equal.

Accepted Answer

A) True 
 B)False

Question 12

Describe the process whereby energy is obtained by glucose oxidation.

Accepted Answer

Answer:Answer:= 32 o...

Question 13

An enzyme that catalyzes phosphorylation of a protein is called a . An enzyme that catalyzes dephosphorylation of a protein is called a(n) .

Accepted Answer

A)  coenzyme : cofactor
B)  cofactor : coenzyme
C)  ligand : active site
D)  kinase : phosphatase
E)  phosphatase : kinaseF) B) and D)
G) B) and E)

Question 14

C6H12O6 + 6O2 -6CO2 + 6H2O is an example of what type of reaction?

Accepted Answer

A)  phosphorylation
B)  hydrolysis
C)  oxidation
D)  reduction
E)  condensationF) A) and E)
G) A) and D)

Question 15

Chemical reactions are only able to occur in one direction.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following contains glucose- 6- phosphatase?

Accepted Answer

A)  brain
B)  skeletal muscle
C)  liver
D)  heart
E)  all organs in the bodyF) A) and D)
G) A) and E)

Question 17

Gluconeogenesis refers to synthesis of and occurs in .

Accepted Answer

A)  glucose : the liver
B)  triglycerides : adipose tissue
C)  glucose : all organs
D)  glycogen : the liver
E)  fatty acids : adipose tissueF) A) and E)
G) B) and E)

Question 18

The addition of two hydrogens and two electrons to NAD+ is an example of what type of chemical reaction?

Accepted Answer

A)  condensation
B)  reduction
C)  oxidation
D)  phosphorylation
E)  hydrolysisF) None of the above
G) C) and D)

Question 19

In this model of enzyme activity, both substrate and product can bind to the active site.

Accepted Answer

A)  law of mass action
B)  induced- fit
C)  enzyme- substrate- complex
D)  affinity
E)  lock- and- keyF) All of the above
G) C) and E)

Question 20

The organ that stores glucose as glycogen and then provides glucose to the blood when needed is the

Accepted Answer

A)  pancreas.
B)  heart.
C)  spleen.
D)  liver.
E)  small intestine.F) A) and E)
G) None of the above

Exam 3: Cell Metabolism

Which of the following contains glucose- 6- phosphatase?

Correct AnswerverifiedShow Answer

Gluconeogenesis refers to synthesis of and occurs in .

Correct AnswerverifiedShow Answer

In this model of enzyme activity, both substrate and product can bind to the active site.

Correct AnswerverifiedShow Answer

The addition of two hydrogens and two electrons to NAD+ is an example of what type of chemical reaction?

Correct AnswerverifiedShow Answer

A reaction is at equilibrium when the rates of the forward and reverse reactions are equal.

Correct AnswerverifiedShow Answer

C6H12O6 + 6O2 -6CO2 + 6H2O is an example of what type of reaction?

Correct AnswerverifiedShow Answer

An increase in temperature increases the potential energy of molecules.

Correct AnswerverifiedShow Answer

In a metabolic pathway, the enzyme working the slowest in that pathway is known as the enzyme.

Correct AnswerverifiedShow Answer

Chemiosmotic coupling refers to

Correct AnswerverifiedShow Answer

A substrate is the same as a

Correct AnswerverifiedShow Answer

If the energy change of a reaction (OE) is positive, then

Correct AnswerverifiedShow Answer

Describe the process whereby energy is obtained by glucose oxidation.

Correct AnswerverifiedAnswer:Answer:= 32 o...View AnswerShow Answer

The organ that stores glucose as glycogen and then provides glucose to the blood when needed is the

Correct AnswerverifiedShow Answer

Complete oxidation of 1 mole glucose produces 6 moles of water and 6 moles of carbon dioxide.

Correct AnswerverifiedShow Answer

A single enzyme could be simultaneously affected by both allosteric regulation and covalent regulation.

Correct AnswerverifiedShow Answer

An enzyme that catalyzes phosphorylation of a protein is called a . An enzyme that catalyzes dephosphorylation of a protein is called a(n) .

Correct AnswerverifiedShow Answer

Under anaerobic conditions, what is pyruvate converted to and where does this occur?

Correct AnswerverifiedShow Answer

Glucose is stored in the form of glycogen primarily within what two organs?

Correct AnswerverifiedShow Answer

Chemical reactions are only able to occur in one direction.

Correct AnswerverifiedShow Answer

What is the final acceptor of electrons in the electron transport?

Correct AnswerverifiedShow Answer

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Answer:Answer:= 32 o...
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