Question 1

The potential energy in a chemical bond is defined as chemical energy.

Accepted Answer

A) True 
 B)False

Question 2

The conversion of a diamond into graphite is a spontaneous reaction. Why are most women walking around with diamond rings and not graphite rings?

Accepted Answer

A)  Inorganic substances, like diamonds, do not react like organic substances. 
B)  The transition state is very stable. 
C)  The energy of activation is very high. 
D)  The free energy of this reaction is too low. 
E)  The free energy of this reaction is too high. 
A)  Inorganic substances, like diamonds, do not react like organic substances. 
B)  The transition state is very stable. 
C)  The energy of activation is very high. 
D)  The free energy of this reaction is too low. 
E)  The free energy of this reaction is too high.

Question 3

Enzymes don't change the DG of a reaction.

Accepted Answer

A) True 
 B)False

Question 4

The breakdown of glucose into carbon dioxide, water, and ATP is an example of a(n) ____ pathway.

Accepted Answer

A)  endergonic 
B)  catabolic 
C)  cyclical 
D)  anabolic 
E)  endothermic 
A)  endergonic 
B)  catabolic 
C)  cyclical 
D)  anabolic 
E)  endothermic

Question 5

We can calculate whether a reaction is spontaneous by calculating the change in free energy and accounting for entropy. Your paycheck always lists your gross pay, net (take home) pay, and tax withholdings. Which of the following best correlates your paycheck to the changes in free energy?

Accepted Answer

A)  gross salary = net salary - tax; total energy = free energy - entropy 
B)  net salary = gross salary - tax; free energy = total energy - entropy 
C)  tax = gross - net salary; entropy = total energy - free energy 
D)  gross salary = tax - net salary; total energy = entropy - free energy 
E)  net salary = gross salary + tax; free energy = total energy + entropy 
A)  gross salary = net salary - tax; total energy = free energy - entropy 
B)  net salary = gross salary - tax; free energy = total energy - entropy 
C)  tax = gross - net salary; entropy = total energy - free energy 
D)  gross salary = tax - net salary; total energy = entropy - free energy 
E)  net salary = gross salary + tax; free energy = total energy + entropy

Question 6

Which two factors determine whether a reaction is spontaneous?

Accepted Answer

A)  free energy and activation energy 
B)  activation energy and enthalpy 
C)  enthalpy and entropy 
D)  entropy and activation energy 
E)  activation energy and energy coupling 
A)  free energy and activation energy 
B)  activation energy and enthalpy 
C)  enthalpy and entropy 
D)  entropy and activation energy 
E)  activation energy and energy coupling

Question 7

Why do Siamese cats have brown ears, nose, tails and paws?

Accepted Answer

A)  Siamese cats contain heat-sensitive enzymes that are more active in the extremities. 
B)  Siamese cats contain heat-sensitive enzymes that are more active in the core body. 
C)  Siamese cats contain pH-sensitive enzymes that are more active in regions of the body exposed to UV radiation. 
D)  Siamese cats contain pH-sensitive enzymes that are more active in regions of the body that are not exposed to UV radiation. 
E)  Siamese cats contain pH-sensitive enzymes that are more active in regions of the body that contain nerve endings. 
A)  Siamese cats contain heat-sensitive enzymes that are more active in the extremities. 
B)  Siamese cats contain heat-sensitive enzymes that are more active in the core body. 
C)  Siamese cats contain pH-sensitive enzymes that are more active in regions of the body exposed to UV radiation. 
D)  Siamese cats contain pH-sensitive enzymes that are more active in regions of the body that are not exposed to UV radiation. 
E)  Siamese cats contain pH-sensitive enzymes that are more active in regions of the body that contain nerve endings.

Exam 6: Energy, Enzymes, and Biological Reactions

The potential energy in a chemical bond is defined as chemical energy.

The conversion of a diamond into graphite is a spontaneous reaction. Why are most women walking around with diamond rings and not graphite rings?

Enzymes don't change the DG of a reaction.

The breakdown of glucose into carbon dioxide, water, and ATP is an example of a(n) ____ pathway.

We can calculate whether a reaction is spontaneous by calculating the change in free energy and accounting for entropy. Your paycheck always lists your gross pay, net (take home) pay, and tax withholdings. Which of the following best correlates your paycheck to the changes in free energy?

Which two factors determine whether a reaction is spontaneous?

Why do Siamese cats have brown ears, nose, tails and paws?

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Expression: From Dna to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technology: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Digestive Systems and Animal Nutrition

Regulating the Internal Environment: Osmoregulation, Excretion, and Thermoregulation

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

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