Question 1

Which lipid can be identified by its isoprene units?

Accepted Answer

A)  fats 
B)  steroids 
C)  carotenoids 
D)  amino acids 
E)  phospholipids 
A)  fats 
B)  steroids 
C)  carotenoids 
D)  amino acids 
E)  phospholipids

Question 2

The helical coil shape of an α -helix fibrous protein provides what type of property to that protein?

Accepted Answer

A)  rigidity 
B)  strength 
C)  elasticity 
D)  heat tolerance 
E)  water retention 
A)  rigidity 
B)  strength 
C)  elasticity 
D)  heat tolerance 
E)  water retention

Question 3

Cyclic AMP is a type of nucleotide . 
__________________

Accepted Answer

A) True 
 B)False

Question 4

The following amino acid would be characterized as ____ based on the chemical properties of its side chain.

Accepted Answer

A)  basic 
B)  acidic 
C)  nonpolar 
D)  hydrophilic 
E)  electrically charged 
A)  basic 
B)  acidic 
C)  nonpolar 
D)  hydrophilic 
E)  electrically charged

Question 5

Which statement best summarizes the differences between RNA and DNA?

Accepted Answer

A)  RNA is a single-stranded form of DNA. 
B)  DNA is a polymer and RNA is a monomer. 
C)  RNA is a protein and DNA is a nucleic acid. 
D)  DNA is the primary energy currency of all cells. 
E)  DNA comprises the genes, while RNA is a direct participant in the process of protein synthesis. 
A)  RNA is a single-stranded form of DNA. 
B)  DNA is a polymer and RNA is a monomer. 
C)  RNA is a protein and DNA is a nucleic acid. 
D)  DNA is the primary energy currency of all cells. 
E)  DNA comprises the genes, while RNA is a direct participant in the process of protein synthesis.

Question 6

At which level of protein structure are peptide bonds most important?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
E)  globular 
A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
E)  globular

Question 7

The carboxyl group can exist in an ionized form and also in a nonionized form. 
__________________

Accepted Answer

A) True 
 B)False

Question 8

What is the purpose of regulatory proteins?

Accepted Answer

A)  To store nutrients 
B)  To defend against foreign invaders 
C)  To catalyze a specific chemical reaction 
D)  To control the expression of specific genes 
E)  To strengthen and protect cells and tissues 
A)  To store nutrients 
B)  To defend against foreign invaders 
C)  To catalyze a specific chemical reaction 
D)  To control the expression of specific genes 
E)  To strengthen and protect cells and tissues

Question 9

Which organic compound is not only responsible for energy storage, but also can provide thermal insulation?

Accepted Answer

A)  lipids 
B)  proteins 
C)  nucleic acids 
D)  carbohydrates 
E)  monosaccharides 
A)  lipids 
B)  proteins 
C)  nucleic acids 
D)  carbohydrates 
E)  monosaccharides

Question 10

When a nucleic acid undergoes hydrolysis, the resulting subunits are:

Accepted Answer

A)  fatty acids. 
B)  amino acids. 
C)  nucleotides. 
D)  carotenoids. 
E)  monosaccharides. 
A)  fatty acids. 
B)  amino acids. 
C)  nucleotides. 
D)  carotenoids. 
E)  monosaccharides.

Question 11

When we know what kinds of ____ are present in an organic compound, we can predict its chemical behavior.

Accepted Answer

A)  proteins 
B)  enzymes 
C)  triacylglycerols 
D)  macomolecules 
E)  functional groups 
A)  proteins 
B)  enzymes 
C)  triacylglycerols 
D)  macomolecules 
E)  functional groups

Question 12

Figure 3-2   In the accompanying figure, hydrophobic interactions would occur between the R groups of which two amino acids?

Accepted Answer

A)  1 and 4 
B)  2 and 5 
C)  3 and 6 
D)  2 and 4 
E)  3 and 5 
A)  1 and 4 
B)  2 and 5 
C)  3 and 6 
D)  2 and 4 
E)  3 and 5

Question 13

Figure 3-2   In the accompanying figure, ionic bonds would form between the R groups of which amino acids?

Accepted Answer

A)  1 and 3 
B)  2 and 4 
C)  3 and 5 
D)  4 and 6 
E)  3 and 6 
A)  1 and 3 
B)  2 and 4 
C)  3 and 5 
D)  4 and 6 
E)  3 and 6

Question 14

Fats high in unsaturated fatty acids tend to be solid at room temperature. 
__________________

Accepted Answer

A) True 
 B)False

Question 15

If you partially hydrogenate oleic acid, the resulting molecule most likely would:

Accepted Answer

A)  lose a carbon atom. 
B)  lose a carboxyl group. 
C)  become soluble in water. 
D)  contain more double bonds. 
E)  have a double bond changed from cis to trans. 
A)  lose a carbon atom. 
B)  lose a carboxyl group. 
C)  become soluble in water. 
D)  contain more double bonds. 
E)  have a double bond changed from cis to trans.

Question 16

A beta-pleated sheet is an example of a protein's tertiary structure. 
__________________

Accepted Answer

A) True 
 B)False

Question 17

Identify three functions of proteins other than enzymes and briefly discuss or describe each.

Accepted Answer

Table 3-2 lists the

Question 18

When glucose and fructose undergo condensation, maltose is produced as a product. 
__________________

Accepted Answer

A) True 
 B)False

Question 19

A pyrimidine is a double -ring molecule. 
__________________

Accepted Answer

A) True 
 B)False

Question 20

Figure 3-3   What type of connection exists between the atoms at the point labeled 1 in the accompanying figure?

Accepted Answer

A)  peptide bond 
B)  disulfide bond 
C)  hydrogen bond 
D)  glycoside linkage 
E)  phosphodiester linkage 
A)  peptide bond 
B)  disulfide bond 
C)  hydrogen bond 
D)  glycoside linkage 
E)  phosphodiester linkage

Exam 3: The Chemistry of Life Organic Compounds

Which lipid can be identified by its isoprene units?

The helical coil shape of an α -helix fibrous protein provides what type of property to that protein?

Cyclic AMP is a type of nucleotide . __________________

The following amino acid would be characterized as ____ based on the chemical properties of its side chain.

Which statement best summarizes the differences between RNA and DNA?

At which level of protein structure are peptide bonds most important?

The carboxyl group can exist in an ionized form and also in a nonionized form. __________________

What is the purpose of regulatory proteins?

Which organic compound is not only responsible for energy storage, but also can provide thermal insulation?

When a nucleic acid undergoes hydrolysis, the resulting subunits are:

When we know what kinds of ____ are present in an organic compound, we can predict its chemical behavior.

Figure 3-2 In the accompanying figure, hydrophobic interactions would occur between the R groups of which two amino acids?

Figure 3-2 In the accompanying figure, ionic bonds would form between the R groups of which amino acids?

Fats high in unsaturated fatty acids tend to be solid at room temperature. __________________

If you partially hydrogenate oleic acid, the resulting molecule most likely would:

A beta-pleated sheet is an example of a protein's tertiary structure. __________________

Identify three functions of proteins other than enzymes and briefly discuss or describe each.

When glucose and fructose undergo condensation, maltose is produced as a product. __________________

A pyrimidine is a double -ring molecule. __________________

Figure 3-3 What type of connection exists between the atoms at the point labeled 1 in the accompanying figure?

A View of Life

Atoms and Molecules the Chemical Basis of Life

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

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

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