Question 1

Suppose the free energy of the reactants is greater than the free energy of the products. Such a reaction is referred to as a(n) ____.

Accepted Answer

A)  entropic reaction 
B)  endergonic reaction 
C)  exergonic reaction 
D)  catabolic reaction 
E)  activation reaction 
A)  entropic reaction 
B)  endergonic reaction 
C)  exergonic reaction 
D)  catabolic reaction 
E)  activation reaction

Question 2

The equation, G = H − TS , predicts that

Accepted Answer

A)  metabolism decreases proportionately to anabolism. 
B)  metabolism increases proportionately to catabolism. 
C)  as enthalpy decreases, the amount of entropy also decreases. 
D)  as entropy increases, the amount of free energy decreases. 
E)  as enthalpy increases, the amount of free energy increases. 
A)  metabolism decreases proportionately to anabolism. 
B)  metabolism increases proportionately to catabolism. 
C)  as enthalpy decreases, the amount of entropy also decreases. 
D)  as entropy increases, the amount of free energy decreases. 
E)  as enthalpy increases, the amount of free energy increases.

Question 3

Enzyme names are usually derived from the name of its substrate followed by which suffix?

Accepted Answer

A)  -ase 
B)  -tic 
C)  -yst 
D)  -lose 
E)  -ator 
A)  -ase 
B)  -tic 
C)  -yst 
D)  -lose 
E)  -ator

Question 4

What is needed in the following reaction: ____ + Pi + energy → ADP.

Accepted Answer

A)  ATP 
B)  H2O 
C)  AMP 
D)  cAMP 
E)  glucose-P 
A)  ATP 
B)  H2O 
C)  AMP 
D)  cAMP 
E)  glucose-P

Question 5

Consider the following two chemical equations: 
A. glucose + fructose → sucrose + H2O, Δ G = +27 kJ/mole (or +6.5 kcal/mole)
B. glucose + fructose + ATP → sucrose + ADP + Pi, Δ G = −5 kJ/mole (or −1.2 kcal/mole)
The overall free energy change in the chemical equations (A) and (B) above is accomplished by

Accepted Answer

A)  a decrease in activation energy. 
B)  combining two endergonic reactions. 
C)  combining an endergonic and an exergonic reaction. 
D)  combining two exergonic reactions. 
E)  measuring the reaction rate. 
A)  a decrease in activation energy. 
B)  combining two endergonic reactions. 
C)  combining an endergonic and an exergonic reaction. 
D)  combining two exergonic reactions. 
E)  measuring the reaction rate.

Question 6

Capacity to do work as a result of position or state is known as _______.

Accepted Answer

A)  potential energy 
B)  thermal energy 
C)  electrical energy 
D)  chemical energy 
E)  kinetic energy 
A)  potential energy 
B)  thermal energy 
C)  electrical energy 
D)  chemical energy 
E)  kinetic energy

Question 7

What is the function of the oxidoreductases?

Accepted Answer

A)  Catalyze conversion of a molecule from one isomeric form to another 
B)  Catalyze hydrolysis reactions 
C)  Catalyze oxidation-reduction reactions 
D)  Catalyze certain reactions in which double bonds form or break 
E)  Catalyze the transfer of a functional group from a donor molecule to an acceptor molecule 
A)  Catalyze conversion of a molecule from one isomeric form to another 
B)  Catalyze hydrolysis reactions 
C)  Catalyze oxidation-reduction reactions 
D)  Catalyze certain reactions in which double bonds form or break 
E)  Catalyze the transfer of a functional group from a donor molecule to an acceptor molecule

Question 8

Which of the following is the common cofactor for enzymes?

Accepted Answer

A)  Zinc 
B)  Copper 
C)  Lead 
D)  Iron 
E)  Magnesium 
A)  Zinc 
B)  Copper 
C)  Lead 
D)  Iron 
E)  Magnesium

Question 9

In a reaction in which the rate of the reverse reaction is equal to the rate of the forward reaction, a state of ____ is attained.

Accepted Answer

A)  total entropy 
B)  enthalpy 
C)  thermodynamics 
D)  dynamic equilibrium 
E)  product reversibility 
A)  total entropy 
B)  enthalpy 
C)  thermodynamics 
D)  dynamic equilibrium 
E)  product reversibility

Question 10

According to the second law of thermodynamics, the amount of usable energy available to do work in the universe ____ over time.

Accepted Answer

A)  crashes 
B)  decreases 
C)  increases 
D)  stays constant 
E)  exponentially increases 
A)  crashes 
B)  decreases 
C)  increases 
D)  stays constant 
E)  exponentially increases

Question 11

The region of the enzyme molecule that interacts with a substrate is called the ______.

Accepted Answer

A)  cofactor 
B)  active site 
C)  reaction site 
D)  enzyme product site 
E)  enzyme-substrate complex 
A)  cofactor 
B)  active site 
C)  reaction site 
D)  enzyme product site 
E)  enzyme-substrate complex

Question 12

A closed system does not exchange energy with its surroundings.

Accepted Answer

A) True 
 B)False

Question 13

The unit of measurement for energy that most biologists today prefer is ____________.

Accepted Answer

A)  kilowatts 
B)  kilograms 
C)  kilocalories 
D)  kilometers 
E)  kilojoules 
A)  kilowatts 
B)  kilograms 
C)  kilocalories 
D)  kilometers 
E)  kilojoules

Exam 7: Energy and Metabolism

Suppose the free energy of the reactants is greater than the free energy of the products. Such a reaction is referred to as a(n) ____.

The equation, G = H − TS , predicts that

Enzyme names are usually derived from the name of its substrate followed by which suffix?

What is needed in the following reaction: ____ + Pi + energy → ADP.

Capacity to do work as a result of position or state is known as _______.

What is the function of the oxidoreductases?

Which of the following is the common cofactor for enzymes?

In a reaction in which the rate of the reverse reaction is equal to the rate of the forward reaction, a state of ____ is attained.

According to the second law of thermodynamics, the amount of usable energy available to do work in the universe ____ over time.

The region of the enzyme molecule that interacts with a substrate is called the ______.

A closed system does not exchange energy with its surroundings.

The unit of measurement for energy that most biologists today prefer is ____________.

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