Question 1

In the reaction (H2O + CO2 F1F1F1S1F1F1F10 H2CO3),increasing the concentration of H2O would

Accepted Answer

A) decrease the concentration of H2CO3. 
B) increase the concentration of H2CO3. 
C) increase the concentration of CO2. 
D) have no effect on either CO2 or H2CO3 concentrations. 
A) decrease the concentration of H2CO3. 
B) increase the concentration of H2CO3. 
C) increase the concentration of CO2. 
D) have no effect on either CO2 or H2CO3 concentrations.

Question 2

Elevated plasma amylase could indicate

Accepted Answer

A) osteitis deformans. 
B) a myocardial infarct. 
C) obstructive jaundice. 
D) a perforated peptic ulcer. 
A) osteitis deformans. 
B) a myocardial infarct. 
C) obstructive jaundice. 
D) a perforated peptic ulcer.

Question 3

The pH optima for all digestive enzymes are approximately equal to the pH of blood.

Accepted Answer

A) True 
 B)False

Question 4

Ribozymes are RNA molecules that act as

Accepted Answer

A) hormones. 
B) cofactors. 
C) enzymes. 
D) inhibitors. 
A) hormones. 
B) cofactors. 
C) enzymes. 
D) inhibitors.

Question 5

If NAD becomes reduced it is a(n)

Accepted Answer

A) reducing agent. 
B) oxidizing agent. 
C) zymogen. 
D) allosteric inhibitor. 
A) reducing agent. 
B) oxidizing agent. 
C) zymogen. 
D) allosteric inhibitor.

Question 6

What technique has been affective in the treatment of inborn errors of metabolism such as SCID?

Accepted Answer

A) allosteric inhibition 
B) gene therapy 
C) coenzyme activation 
D) None of the choices is correct. 
A) allosteric inhibition 
B) gene therapy 
C) coenzyme activation 
D) None of the choices is correct.

Question 7

Energy transformations increase the entropy of a system is a statement of the

Accepted Answer

A) first law of thermodynamics. 
B) second law of thermodynamics. 
C) law of mass action. 
D) law of conservation of energy. 
A) first law of thermodynamics. 
B) second law of thermodynamics. 
C) law of mass action. 
D) law of conservation of energy.

Question 8

Pancreatic amylase catalyzes the breakdown of oligosaccarides to disaccharides with the addition of water.What classification of enzymes would amylase be in?

Accepted Answer

A) dehydrogenase 
B) isomerase 
C) synthase 
D) hydrolase 
A) dehydrogenase 
B) isomerase 
C) synthase 
D) hydrolase

Question 9

The substrate binds to the ______________ of the enzyme.

Accepted Answer

A) allosteric site 
B) acidic site 
C) neutral site 
D) active site 
A) allosteric site 
B) acidic site 
C) neutral site 
D) active site

Question 10

An inborn error in lipid metabolism may cause all of the following diseases EXCEPT

Accepted Answer

A) Tay-Sachs disease. 
B) homocystinuria. 
C) hypercholesteremia. 
D) Gaucher's disease. 
A) Tay-Sachs disease. 
B) homocystinuria. 
C) hypercholesteremia. 
D) Gaucher's disease.

Question 11

Which of the following statements about enzymes is NOT true?

Accepted Answer

A) Enzymes increase chemical reaction rates. 
B) Enzymes are consumed during a chemical reaction. 
C) Enzymes decrease the free energy of activation of specific reactions. 
D) Enzymes have unique pH and temperature optima. 
A) Enzymes increase chemical reaction rates. 
B) Enzymes are consumed during a chemical reaction. 
C) Enzymes decrease the free energy of activation of specific reactions. 
D) Enzymes have unique pH and temperature optima.

Question 12

Oxidized nicotinamide adenine dinucleotide (NAD)has ______________ two hydrogens.

Accepted Answer

A) lost 
B) gained 
C) shared 
A) lost 
B) gained 
C) shared

Question 13

Catalysts increase reaction rates by lowering the activation energy of a reaction.

Accepted Answer

A) True 
 B)False

Question 14

Active enzymes are often called zymogens.

Accepted Answer

A) True 
 B)False

Question 15

During reduction,a molecule or atom

Accepted Answer

A) gains protons or gains electrons. 
B) loses protons or gains electrons. 
C) gains protons or loses electrons. 
D) loses protons or loses electrons. 
A) gains protons or gains electrons. 
B) loses protons or gains electrons. 
C) gains protons or loses electrons. 
D) loses protons or loses electrons.

Question 16

When an enzyme catalyzes a chemical reaction

Accepted Answer

A) the enzyme binds to the substrate's active site. 
B) the enzyme's active site binds the product. 
C) amino acids in the substrate allow for interaction with the product. 
D) amino acids in the enzyme's active site interact with substrate molecules. 
A) the enzyme binds to the substrate's active site. 
B) the enzyme's active site binds the product. 
C) amino acids in the substrate allow for interaction with the product. 
D) amino acids in the enzyme's active site interact with substrate molecules.

Question 17

Exergonic reactions proceed with the release of energy.

Accepted Answer

A) True 
 B)False

Question 18

End-product inhibition usually involves allosteric inhibition of an enzyme.

Accepted Answer

A) True 
 B)False

Question 19

The process that yeast uses to make alcohol from glucose is

Accepted Answer

A) fermentation. 
B) aerobic respiration. 
C) photosynthesis. 
D) catalysis. 
A) fermentation. 
B) aerobic respiration. 
C) photosynthesis. 
D) catalysis.

Question 20

Coenzymes are organic molecules that are required for proper function of some enzymes.

Accepted Answer

A) True 
 B)False

In the reaction (H₂O + CO₂  H₂CO₃),increasing the concentration of H₂O would

Elevated plasma amylase could indicate

The pH optima for all digestive enzymes are approximately equal to the pH of blood.

Ribozymes are RNA molecules that act as

If NAD becomes reduced it is a(n)

What technique has been affective in the treatment of inborn errors of metabolism such as SCID?

Energy transformations increase the entropy of a system is a statement of the

Pancreatic amylase catalyzes the breakdown of oligosaccarides to disaccharides with the addition of water.What classification of enzymes would amylase be in?

The substrate binds to the ______________ of the enzyme.

An inborn error in lipid metabolism may cause all of the following diseases EXCEPT

Which of the following statements about enzymes is NOT true?

Oxidized nicotinamide adenine dinucleotide (NAD)has ______________ two hydrogens.

Catalysts increase reaction rates by lowering the activation energy of a reaction.

Active enzymes are often called zymogens.

During reduction,a molecule or atom

When an enzyme catalyzes a chemical reaction

Exergonic reactions proceed with the release of energy.

End-product inhibition usually involves allosteric inhibition of an enzyme.

The process that yeast uses to make alcohol from glucose is

Coenzymes are organic molecules that are required for proper function of some enzymes.

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

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Exam 4: Enzymes and Energy

In the reaction (H2O + CO2  H2CO3),increasing the concentration of H2O would

Elevated plasma amylase could indicate

The pH optima for all digestive enzymes are approximately equal to the pH of blood.

Ribozymes are RNA molecules that act as

If NAD becomes reduced it is a(n)

What technique has been affective in the treatment of inborn errors of metabolism such as SCID?

Energy transformations increase the entropy of a system is a statement of the

Pancreatic amylase catalyzes the breakdown of oligosaccarides to disaccharides with the addition of water.What classification of enzymes would amylase be in?

The substrate binds to the ______________ of the enzyme.

An inborn error in lipid metabolism may cause all of the following diseases EXCEPT

Which of the following statements about enzymes is NOT true?

Oxidized nicotinamide adenine dinucleotide (NAD)has ______________ two hydrogens.

Catalysts increase reaction rates by lowering the activation energy of a reaction.

Active enzymes are often called zymogens.

During reduction,a molecule or atom

When an enzyme catalyzes a chemical reaction

Exergonic reactions proceed with the release of energy.

End-product inhibition usually involves allosteric inhibition of an enzyme.

The process that yeast uses to make alcohol from glucose is

Coenzymes are organic molecules that are required for proper function of some enzymes.

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

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In the reaction (H₂O + CO₂  H₂CO₃),increasing the concentration of H₂O would