Question 1

Figure 7-1
Use the figure to answer the corresponding question(s).  
-Energy stored within the molecules of ATP is in the form of __________ energy.

Accepted Answer

A)  kinetic 
B)  heat 
C)  potential 
D)  nuclear 
E)  light 
A)  kinetic 
B)  heat 
C)  potential 
D)  nuclear 
E)  light

Question 2

Which of the following accurately represents the relationship between the terms anabolism, catabolism, and metabolism?

Accepted Answer

A)  anabolism = catabolism 
B)  metabolism = catabolism 
C)  catabolism = anabolism + metabolism 
D)  anabolism = catabolism + metabolism 
E)  metabolism = catabolism + anabolism 
A)  anabolism = catabolism 
B)  metabolism = catabolism 
C)  catabolism = anabolism + metabolism 
D)  anabolism = catabolism + metabolism 
E)  metabolism = catabolism + anabolism

Question 3

Figure 7-2
Use the figure to answer the corresponding question(s).  
-Refer to Figure 7-2.The line on the graph labeled B represents the:

Accepted Answer

A)  activation energy with an enzyme. 
B)  activation energy without an enzyme. 
C)  free energy of the reactants. 
D)  change in entropy. 
E)  change in enthalpy. 
A)  activation energy with an enzyme. 
B)  activation energy without an enzyme. 
C)  free energy of the reactants. 
D)  change in entropy. 
E)  change in enthalpy.

Question 4

You conduct an experiment in which you add increasing amounts of substrate to an enzyme solution and then measure the resulting reaction rate.You graph your results, plotting the rate of the reaction on the Y-axis versus substrate concentration on the X-axis.What do you conclude from your graph?

Accepted Answer

A)  The reaction rate is directly proportional to substrate concentration. 
B)  The reaction rate is independent of substrate concentration. 
C)  The reaction rate increases but then decreases, forming a bell-shaped curve. 
D)  The reaction rate decreases with increasing substrate concentration. 
E)  The reaction rate increases with increasing substrate concentration up to a point, above which the rate remains constant. 
A)  The reaction rate is directly proportional to substrate concentration. 
B)  The reaction rate is independent of substrate concentration. 
C)  The reaction rate increases but then decreases, forming a bell-shaped curve. 
D)  The reaction rate decreases with increasing substrate concentration. 
E)  The reaction rate increases with increasing substrate concentration up to a point, above which the rate remains constant.

Question 5

Figure 7-2
Use the figure to answer the corresponding question(s).  
-Refer to Figure 7-2.The line on the graph labeled C represents the:

Accepted Answer

A)  activation energy with an enzyme. 
B)  activation energy without an enzyme. 
C)  change in free energy. 
D)  change in entropy. 
E)  change in enthalpy. 
A)  activation energy with an enzyme. 
B)  activation energy without an enzyme. 
C)  change in free energy. 
D)  change in entropy. 
E)  change in enthalpy.

Question 6

Living cells maintain biochemical reactions far from equilibrium conditions.They do this by constantly manipulating the concentrations of reactants and products.Why is it important that a state far from equilibrium be maintained?

Accepted Answer

Concepts to Consider: Cells at

Question 7

Which of the following statements is true of spontaneous reactions?

Accepted Answer

A)  The amount of free energy after the reaction is less than before the reaction. 
B)  The amount of disorder after the reaction is less than before the reaction. 
C)  The amount of free energy after the reaction is more than before the reaction. 
D)  The amount of disorder is the same before and after the reaction. 
E)  The amount of enthalpy is more after the reaction than before the reaction. 
A)  The amount of free energy after the reaction is less than before the reaction. 
B)  The amount of disorder after the reaction is less than before the reaction. 
C)  The amount of free energy after the reaction is more than before the reaction. 
D)  The amount of disorder is the same before and after the reaction. 
E)  The amount of enthalpy is more after the reaction than before the reaction.

Question 8

Which of the following statements is contrary to the first law of thermodynamics?

Accepted Answer

A)  When gasoline is burned, its energy is destroyed. 
B)  Energy can be transferred from one form to another. 
C)  Energy can be converted from one form to another. 
D)  Matter can be converted into energy. 
E)  The amount of energy in the universe is constant. 
A)  When gasoline is burned, its energy is destroyed. 
B)  Energy can be transferred from one form to another. 
C)  Energy can be converted from one form to another. 
D)  Matter can be converted into energy. 
E)  The amount of energy in the universe is constant.

Question 9

If one continues to increase the temperature in an enzyme-catalyzed reaction, the rate of the reaction:

Accepted Answer

A)  does not change. 
B)  increases and then levels off. 
C)  decreases and then levels off. 
D)  increases and then decreases rapidly. 
E)  decreases and then increases rapidly. 
A)  does not change. 
B)  increases and then levels off. 
C)  decreases and then levels off. 
D)  increases and then decreases rapidly. 
E)  decreases and then increases rapidly.

Question 10

Every type of chemical bond contains a certain amount of energy.The total bond energy, which is essentially equivalent to the total potential energy of the system, is a quantity known as:

Accepted Answer

A)  entropy. 
B)  kinetic energy. 
C)  thermodynamic energy. 
D)  enthalpy. 
E)  free energy. 
A)  entropy. 
B)  kinetic energy. 
C)  thermodynamic energy. 
D)  enthalpy. 
E)  free energy.

Question 11

Penicillin is a drug that acts by:

Accepted Answer

A)  irreversibly inhibiting transpeptidase. 
B)  reversibly inhibiting transpeptidase. 
C)  competitively inhibiting transpeptidase. 
D)  noncompetitively inhibiting transpeptidase. 
E)  denaturing transpeptidase. 
A)  irreversibly inhibiting transpeptidase. 
B)  reversibly inhibiting transpeptidase. 
C)  competitively inhibiting transpeptidase. 
D)  noncompetitively inhibiting transpeptidase. 
E)  denaturing transpeptidase.

Question 12

Which of the following statements concerning enzymes is FALSE?

Accepted Answer

A)  Each enzyme has an optimal temperature. 
B)  Each enzyme has an optimal pH. 
C)  Most enzymes are highly specific. 
D)  Some enzymes require cofactors. 
E)  Most enzymes are RNA molecules. 
A)  Each enzyme has an optimal temperature. 
B)  Each enzyme has an optimal pH. 
C)  Most enzymes are highly specific. 
D)  Some enzymes require cofactors. 
E)  Most enzymes are RNA molecules.

Question 13

It is a fact that enzymes are highly specific and will only catalyze one or a few reactions.Can you think of a benefit that is derived from such specificity? (i.e.What would happen if most biochemical reactions were catalyzed by the same enzyme?)

Accepted Answer

Concepts to Consider: Having specific en

Question 14

Enzymes are important biological catalysts because they:

Accepted Answer

A)  supply the energy to initiate a biochemical reaction. 
B)  increase the free energy of a biochemical reaction. 
C)  lower the entropy of a biochemical reaction. 
D)  decrease the enthalpy of a biochemical reaction. 
E)  lower the activation energy of a biochemical reaction. 
A)  supply the energy to initiate a biochemical reaction. 
B)  increase the free energy of a biochemical reaction. 
C)  lower the entropy of a biochemical reaction. 
D)  decrease the enthalpy of a biochemical reaction. 
E)  lower the activation energy of a biochemical reaction.

Question 15

A cell must expend energy to produce a concentration gradient.
__________________

Accepted Answer

A) True 
 B)False

Question 16

The reaction ATP + H2O$\rightarrow$ ADP + Pi is classified as an:

Accepted Answer

A)  endergonic reaction. 
B)  enthalpy reaction. 
C)  entropy reaction. 
D)  exergonic reaction. 
E)  intermediate phosphorylation reaction. 
A)  endergonic reaction. 
B)  enthalpy reaction. 
C)  entropy reaction. 
D)  exergonic reaction. 
E)  intermediate phosphorylation reaction.

Exam 7: Energy and Metabolism

Figure 7-1 Use the figure to answer the corresponding question(s). -Energy stored within the molecules of ATP is in the form of __________ energy.

Which of the following accurately represents the relationship between the terms anabolism, catabolism, and metabolism?

Figure 7-2 Use the figure to answer the corresponding question(s). -Refer to Figure 7-2.The line on the graph labeled B represents the:

You conduct an experiment in which you add increasing amounts of substrate to an enzyme solution and then measure the resulting reaction rate.You graph your results, plotting the rate of the reaction on the Y-axis versus substrate concentration on the X-axis.What do you conclude from your graph?

Figure 7-2 Use the figure to answer the corresponding question(s). -Refer to Figure 7-2.The line on the graph labeled C represents the:

Living cells maintain biochemical reactions far from equilibrium conditions.They do this by constantly manipulating the concentrations of reactants and products.Why is it important that a state far from equilibrium be maintained?

Which of the following statements is true of spontaneous reactions?

Which of the following statements is contrary to the first law of thermodynamics?

If one continues to increase the temperature in an enzyme-catalyzed reaction, the rate of the reaction:

Every type of chemical bond contains a certain amount of energy.The total bond energy, which is essentially equivalent to the total potential energy of the system, is a quantity known as:

Penicillin is a drug that acts by:

Which of the following statements concerning enzymes is FALSE?

It is a fact that enzymes are highly specific and will only catalyze one or a few reactions.Can you think of a benefit that is derived from such specificity? (i.e.What would happen if most biochemical reactions were catalyzed by the same enzyme?)

Enzymes are important biological catalysts because they:

A cell must expend energy to produce a concentration gradient. __________________

The reaction ATP + H2O →\rightarrow→ ADP + Pi is classified as an:

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

The reaction ATP + H₂O $\rightarrow$ ADP + P_i is classified as an: