Question 1

Phospholipids and triglycerides both ________.

Accepted Answer

A)  contain serine or some other organic compound 
B)  have three fatty acids 
C)  have a glycerol backbone 
D)  have a phosphate 
A)  contain serine or some other organic compound 
B)  have three fatty acids 
C)  have a glycerol backbone 
D)  have a phosphate

Question 2

The following question is based on the 15 molecules illustrated in the figure.
 
Which molecule is a saturated fatty acid?

Accepted Answer

A)  1 
B)  5 
C)  8 
D)  9 
A)  1 
B)  5 
C)  8 
D)  9

Question 3

The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the form. Which of the following could amylase break down?

Accepted Answer

A)  glycogen, starch, and amylopectin 
B)  glycogen and cellulose 
C)  cellulose and chitin 
D)  starch, chitin, and cellulose 
A)  glycogen, starch, and amylopectin 
B)  glycogen and cellulose 
C)  cellulose and chitin 
D)  starch, chitin, and cellulose

Question 4

A glycosidic linkage is analogous to which of the following in proteins?

Accepted Answer

A)  an amino group 
B)  a peptide bond 
C)  a disulfide bond 
D)  a β pleated sheet 
A)  an amino group 
B)  a peptide bond 
C)  a disulfide bond 
D)  a β pleated sheet

Question 5

Saturated fats ________.

Accepted Answer

A)  are more common in plants than in animals 
B)  have multiple double bonds in the carbon chains of their fatty acids 
C)  are generally liquid at room temperature 
D)  contain more hydrogen than unsaturated fats that consist of the same number of carbon atoms 
A)  are more common in plants than in animals 
B)  have multiple double bonds in the carbon chains of their fatty acids 
C)  are generally liquid at room temperature 
D)  contain more hydrogen than unsaturated fats that consist of the same number of carbon atoms

Question 6

In carbohydrates, the ratio of hydrogen (H)to oxygen (O)is ________.

Accepted Answer

A)  1:1 
B)  2:1 
C)  3:1 
D)  4:1 
A)  1:1 
B)  2:1 
C)  3:1 
D)  4:1

Question 7

Which of the following pairs of base sequences could form a short stretch of a normal double helix of DNA?

Accepted Answer

A)  5′-AGCT-3′ with 5′-TCGA-3′ 
B)  5′-GCGC-3′ with 5′-TATA-3′ 
C)  5′-ATGC-3′ with 5′-GCAT-3′ 
D)  All of these pairs are correct. 
A)  5′-AGCT-3′ with 5′-TCGA-3′ 
B)  5′-GCGC-3′ with 5′-TATA-3′ 
C)  5′-ATGC-3′ with 5′-GCAT-3′ 
D)  All of these pairs are correct.

Question 8

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions?

Accepted Answer

A)  C₁₈H₃₆O₁₈ 
B)  C₁₈H₃₂O₁₆ 
C)  C₆H₁₀O₅ 
D)  C₁₈H₃₀O₁₅ 
A)  C₁₈H₃₆O₁₈ 
B)  C₁₈H₃₂O₁₆ 
C)  C₆H₁₀O₅ 
D)  C₁₈H₃₀O₁₅

Question 9

Which polysaccharide is an important component in the structure of many animals and fungi?

Accepted Answer

A)  chitin 
B)  cellulose 
C)  amylopectin 
D)  amylose 
A)  chitin 
B)  cellulose 
C)  amylopectin 
D)  amylose

Question 10

What component of amino acid structure varies among different amino acids?

Accepted Answer

A)  the long carbon-hydrogen tails of the molecule 
B)  the presence of a central C atom 
C)  the components of the R group 
D)  the glycerol molecule that forms the backbone of the amino acid 
A)  the long carbon-hydrogen tails of the molecule 
B)  the presence of a central C atom 
C)  the components of the R group 
D)  the glycerol molecule that forms the backbone of the amino acid

Question 11

The following question is based on the 15 molecules illustrated in the figure.
 
Which of the following molecules is the pentose sugar found in RNA?

Accepted Answer

A)  1 
B)  6 
C)  12 
D)  13 
A)  1 
B)  6 
C)  12 
D)  13

Question 12

The structural level of a protein least affected by a disruption in hydrogen bonding is the

Accepted Answer

A)  primary level. 
B)  secondary level. 
C)  tertiary level. 
D)  quaternary level. 
A)  primary level. 
B)  secondary level. 
C)  tertiary level. 
D)  quaternary level.

Question 13

The relation between amino acid and polypeptide is similar to the relation between ________.

Accepted Answer

A)  nucleotide and nucleic acid 
B)  triglycerides and steroids 
C)  phospholipid and plasma membrane 
D)  glycogen and glucose 
A)  nucleotide and nucleic acid 
B)  triglycerides and steroids 
C)  phospholipid and plasma membrane 
D)  glycogen and glucose

Question 14

How many molecules of water are released during the polymerization of a 20 monomer-long cellulose molecule?

Accepted Answer

A)  10 
B)  19 
C)  20 
D)  40 
A)  10 
B)  19 
C)  20 
D)  40

Question 15

For lipids to be fluid at room temperature, they should have ________.

Accepted Answer

A)  single bonds only 
B)  a higher number of glycerol molecules 
C)  a higher number of cis double bonds 
D)  a longer carbon chain 
A)  single bonds only 
B)  a higher number of glycerol molecules 
C)  a higher number of cis double bonds 
D)  a longer carbon chain

Question 16

Which of the following could be responsible for atherosclerosis and should be eliminated from diet for health reasons?

Accepted Answer

A)  butter 
B)  olive oil 
C)  liver and kidney organ meat 
D)  butter, liver, and kidney organ meat 
A)  butter 
B)  olive oil 
C)  liver and kidney organ meat 
D)  butter, liver, and kidney organ meat

Question 17

Which of the following is not a polymer?

Accepted Answer

A)  glucose 
B)  starch 
C)  RNA 
D)  DNA 
A)  glucose 
B)  starch 
C)  RNA 
D)  DNA

Question 18

The following question is based on the 15 molecules illustrated in the figure.
 
Which of the following molecules act as building blocks (monomers)of polypeptides?

Accepted Answer

A)  1, 4, and 6 
B)  2, 7, and 8 
C)  7, 8, and 13 
D)  11, 12, and 13 
A)  1, 4, and 6 
B)  2, 7, and 8 
C)  7, 8, and 13 
D)  11, 12, and 13

Question 19

Use the following figure to answer the question.
 
The molecule shown the figure is a ________.

Accepted Answer

A)  fatty acid 
B)  steroid 
C)  triacylglycerol 
D)  phospholipid 
A)  fatty acid 
B)  steroid 
C)  triacylglycerol 
D)  phospholipid

Question 20

A molecule with the chemical formula C₆H₁₂O₆ is probably a ________.

Accepted Answer

A)  fatty acid 
B)  polysaccharide 
C)  nucleic acid 
D)  monosaccharide 
A)  fatty acid 
B)  polysaccharide 
C)  nucleic acid 
D)  monosaccharide

Exam 5: The Structure and Function of Large Biological Molecules

Phospholipids and triglycerides both ________.

The following question is based on the 15 molecules illustrated in the figure. Which molecule is a saturated fatty acid?

The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the form. Which of the following could amylase break down?

A glycosidic linkage is analogous to which of the following in proteins?

Saturated fats ________.

In carbohydrates, the ratio of hydrogen (H)to oxygen (O)is ________.

Which of the following pairs of base sequences could form a short stretch of a normal double helix of DNA?

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions?

Which polysaccharide is an important component in the structure of many animals and fungi?

What component of amino acid structure varies among different amino acids?

The following question is based on the 15 molecules illustrated in the figure. Which of the following molecules is the pentose sugar found in RNA?

The structural level of a protein least affected by a disruption in hydrogen bonding is the

The relation between amino acid and polypeptide is similar to the relation between ________.

How many molecules of water are released during the polymerization of a 20 monomer-long cellulose molecule?

For lipids to be fluid at room temperature, they should have ________.

Which of the following could be responsible for atherosclerosis and should be eliminated from diet for health reasons?

Which of the following is not a polymer?

The following question is based on the 15 molecules illustrated in the figure. Which of the following molecules act as building blocks (monomers)of polypeptides?

Use the following figure to answer the question. The molecule shown the figure is a ________.

A molecule with the chemical formula C₆H₁₂O₆ is probably a ________.

Evolution, the Themes of Biology, and Scientific Inquiry

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Vascular Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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