Question 1

The two strands of a DNA double helix are described as running parallel to each other.
__________________

Accepted Answer

A) True 
 B)False  False

Question 2

Which of the following best describes semiconservative replication?

Accepted Answer

A)  The translation of a DNA molecule into a complementary strand of RNA. 
B)  A DNA molecule consists of one parental strand and one new strand. 
C)  The number of DNA molecules is doubled with every other replication. 
D)  The replication of DNA never takes place with 100% accuracy. 
E)  The replication of DNA takes place at a defined period in the cell cycle. 
A)  The translation of a DNA molecule into a complementary strand of RNA. 
B)  A DNA molecule consists of one parental strand and one new strand. 
C)  The number of DNA molecules is doubled with every other replication. 
D)  The replication of DNA never takes place with 100% accuracy. 
E)  The replication of DNA takes place at a defined period in the cell cycle. B

Question 3

The DNA strand that is replicated smoothly and continuously is called the:

Accepted Answer

A)  primary strand. 
B)  first strand. 
C)  leading strand. 
D)  alpha strand. 
E)  lagging strand. 
A)  primary strand. 
B)  first strand. 
C)  leading strand. 
D)  alpha strand. 
E)  lagging strand. C

Question 4

The two molecules that alternate to form the backbone of a polynucleotide chain are:

Accepted Answer

A)  adenine and thymine. 
B)  cytosine and guanine. 
C)  sugar and phosphate. 
D)  base and sugar. 
E)  base and phosphate. 
A)  adenine and thymine. 
B)  cytosine and guanine. 
C)  sugar and phosphate. 
D)  base and sugar. 
E)  base and phosphate.

Question 5

Figure 12-1
Use the figure to answer the corresponding question(s).  
-The portion of the molecule in box 5 of Figure 12-1 is:

Accepted Answer

A)  a hydrogen bond. 
B)  a phosphate. 
C)  a nucleotide. 
D)  a pyrimidine. 
E)  a protein. 
A)  a hydrogen bond. 
B)  a phosphate. 
C)  a nucleotide. 
D)  a pyrimidine. 
E)  a protein.

Question 6

Which of the following nucleotide sequences represents the complement to the DNA strand 5'-AGATCCG- 3'?

Accepted Answer

A)  5'- AGATCCG- 3' 
B)  3' -AGATCCG- 5' 
C)  5' -CTCGAAT- 3' 
D)  3' - CTCGAAT- 5' 
E)  3' - TCTAGGC- 5' 
A)  5'- AGATCCG- 3' 
B)  3' -AGATCCG- 5' 
C)  5' -CTCGAAT- 3' 
D)  3' - CTCGAAT- 5' 
E)  3' - TCTAGGC- 5'

Question 7

__________ used x-ray diffraction to provide images of DNA.

Accepted Answer

A)  Watson and Crick 
B)  Crick and Wilkins 
C)  Franklin 
D)  Franklin and Crick 
E)  Watson and Wilkins 
A)  Watson and Crick 
B)  Crick and Wilkins 
C)  Franklin 
D)  Franklin and Crick 
E)  Watson and Wilkins

Question 8

The first experimenters to use Griffith's transformation assay to identify the genetic material were:

Accepted Answer

A)  Meselson and Stahl. 
B)  Watson and Crick. 
C)  Franklin and Wilkins. 
D)  Avery, MacLeod, and McCarty. 
E)  Hershey and Chase. 
A)  Meselson and Stahl. 
B)  Watson and Crick. 
C)  Franklin and Wilkins. 
D)  Avery, MacLeod, and McCarty. 
E)  Hershey and Chase.

Question 9

Explain why proteins were initially hypothesized to be the genetic material instead of DNA.

Accepted Answer

Genes were known to control the synthesi

Question 10

Figure 12-1
Use the figure to answer the corresponding question(s).  
-The portion of the molecule in box 3 of Figure 12-1 is:

Accepted Answer

A)  a sugar. 
B)  a protein. 
C)  a pyrimidine. 
D)  a purine. 
E)  a nucleotide. 
A)  a sugar. 
B)  a protein. 
C)  a pyrimidine. 
D)  a purine. 
E)  a nucleotide.

Question 11

MATCHING
In the following questions, match the component of DNA replication with its function.
a.topoisomerase
d.DNA helicase
b.DNA ligase
e.DNA primase
c.DNA polymerase
f.Single-strand binding protein
-adds nucleotides only to the 3' end of an existing polynucleotide strand

Accepted Answer

The answer of MATCHING
In the following questions, match the component...

Question 12

The ends of eukaryotic chromosomes can be lengthened by:

Accepted Answer

A)  apoptosis. 
B)  reverse transcriptase. 
C)  primase. 
D)  telomerase. 
E)  DNA polymerase. 
A)  apoptosis. 
B)  reverse transcriptase. 
C)  primase. 
D)  telomerase. 
E)  DNA polymerase.

Question 13

Which of the following adds new nucleotides to a growing DNA chain?

Accepted Answer

A)  DNA polymerase 
B)  DNA helicase 
C)  RNA primer 
D)  primase 
E)  RNA polymerase 
A)  DNA polymerase 
B)  DNA helicase 
C)  RNA primer 
D)  primase 
E)  RNA polymerase

Question 14

The main reason scientists thought that proteins, rather than DNA, were the carriers of genetic material in the cell was:

Accepted Answer

A)  their presence within the nucleus. 
B)  their abundance within the cell. 
C)  the large number of possible amino acid combinations. 
D)  their ability to self replicate within the cytoplasm. 
E)  their ability to be exported from the cell. 
A)  their presence within the nucleus. 
B)  their abundance within the cell. 
C)  the large number of possible amino acid combinations. 
D)  their ability to self replicate within the cytoplasm. 
E)  their ability to be exported from the cell.

Question 15

MATCHING
In the following questions, match the component of DNA replication with its function.
a.topoisomerase
d.DNA helicase
b.DNA ligase
e.DNA primase
c.DNA polymerase
f.Single-strand binding protein
-Provide two lines of evidence that support the idea that DNA is the genetic material.

Accepted Answer

Concepts to Consider: The experiments of

Question 16

Which of the following statements about DNA is false?

Accepted Answer

A)  DNA is capable of forming many different sequences. 
B)  DNA contains thymine instead of uracil. 
C)  DNA is double-stranded rather than single-stranded. 
D)  DNA is only found in eukaryotic cells. 
E)  DNA contains the sugar deoxyribose. 
A)  DNA is capable of forming many different sequences. 
B)  DNA contains thymine instead of uracil. 
C)  DNA is double-stranded rather than single-stranded. 
D)  DNA is only found in eukaryotic cells. 
E)  DNA contains the sugar deoxyribose.

Question 17

MATCHING
In the following questions, match the component of DNA replication with its function.
a.topoisomerase
d.DNA helicase
b.DNA ligase
e.DNA primase
c.DNA polymerase
f.Single-strand binding protein
-opens the double helix like a zipper

Accepted Answer

The answer of MATCHING
In the following questions, match the component...

Question 18

How is the chromosome of a bacterial cell replicated?

Accepted Answer

A)  The linear DNA molecule is replicated from multiple origins of replication bidirectionally. 
B)  The linear DNA molecule is replicated from one origin of replication bidirectionally. 
C)  The circular DNA molecule is replicated from multiple origins of replication bidirectionally. 
D)  The circular DNA molecule is replicated from one origin of replication bidirectionally. 
E)  The circular DNA molecule is replicated from one origin of replication unidirectionally. 
A)  The linear DNA molecule is replicated from multiple origins of replication bidirectionally. 
B)  The linear DNA molecule is replicated from one origin of replication bidirectionally. 
C)  The circular DNA molecule is replicated from multiple origins of replication bidirectionally. 
D)  The circular DNA molecule is replicated from one origin of replication bidirectionally. 
E)  The circular DNA molecule is replicated from one origin of replication unidirectionally.

Question 19

Cancerous cells differ from noncancerous cells in that cancerous cells:

Accepted Answer

A)  have reduced levels of telomerase. 
B)  divide only 20 to 30 times. 
C)  have lost the ability to resist apoptosis. 
D)  can maintain telomere length as they divide. 
E)  lack telomeres. 
A)  have reduced levels of telomerase. 
B)  divide only 20 to 30 times. 
C)  have lost the ability to resist apoptosis. 
D)  can maintain telomere length as they divide. 
E)  lack telomeres.

Question 20

If you consider a DNA molecule to resemble a twisted ladder, the rungs of the ladder are paired nitrogen bases.
__________________

Accepted Answer

A) True 
 B)False

Exam 12: Dna: the Carrier of Genetic Information

The two strands of a DNA double helix are described as running parallel to each other. __________________

Which of the following best describes semiconservative replication?

The DNA strand that is replicated smoothly and continuously is called the:

The two molecules that alternate to form the backbone of a polynucleotide chain are:

Figure 12-1 Use the figure to answer the corresponding question(s). -The portion of the molecule in box 5 of Figure 12-1 is:

Which of the following nucleotide sequences represents the complement to the DNA strand 5'-AGATCCG- 3'?

__________ used x-ray diffraction to provide images of DNA.

The first experimenters to use Griffith's transformation assay to identify the genetic material were:

Explain why proteins were initially hypothesized to be the genetic material instead of DNA.

Figure 12-1 Use the figure to answer the corresponding question(s). -The portion of the molecule in box 3 of Figure 12-1 is:

MATCHING In the following questions, match the component of DNA replication with its function. a.topoisomerase d.DNA helicase b.DNA ligase e.DNA primase c.DNA polymerase f.Single-strand binding protein -adds nucleotides only to the 3' end of an existing polynucleotide strand

The ends of eukaryotic chromosomes can be lengthened by:

Which of the following adds new nucleotides to a growing DNA chain?

The main reason scientists thought that proteins, rather than DNA, were the carriers of genetic material in the cell was:

MATCHING In the following questions, match the component of DNA replication with its function. a.topoisomerase d.DNA helicase b.DNA ligase e.DNA primase c.DNA polymerase f.Single-strand binding protein -Provide two lines of evidence that support the idea that DNA is the genetic material.

Which of the following statements about DNA is false?

MATCHING In the following questions, match the component of DNA replication with its function. a.topoisomerase d.DNA helicase b.DNA ligase e.DNA primase c.DNA polymerase f.Single-strand binding protein -opens the double helix like a zipper

How is the chromosome of a bacterial cell replicated?

Cancerous cells differ from noncancerous cells in that cancerous cells:

If you consider a DNA molecule to resemble a twisted ladder, the rungs of the ladder are paired nitrogen bases. __________________

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

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

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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