Question 1

List the steps and components involved in the process of DNA replication.

Accepted Answer

The general proccess of DNA re

Question 2

Figure 12-2
Use the figure to answer the corresponding question(s).  
-Refer to Figure 12-2.The enzyme represented by the letter D is responsible for:

Accepted Answer

A)  linking short DNA segments. 
B)  synthesizing the leading strand. 
C)  forming the replication fork. 
D)  forming nucleosomes. 
E)  unwinding the DNA double helix. 
A)  linking short DNA segments. 
B)  synthesizing the leading strand. 
C)  forming the replication fork. 
D)  forming nucleosomes. 
E)  unwinding the DNA double helix.

Question 3

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
-joins Okazaki fragments

Accepted Answer

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

Question 4

In one strand of a DNA molecule, adjacent nucleotides are joined by a phosphodiester linkage.
__________________

Accepted Answer

A) True 
 B)False

Question 5

In the experiments of Griffith, the conversion of nonlethal R-strain bacteria to lethal S-strain bacteria:

Accepted Answer

A)  was the result of genetic mutation. 
B)  was an example of the genetic exchange known as transformation. 
C)  supported the case for proteins as the genetic material. 
D)  could not be reproduced by other researchers. 
E)  was an example of conjugation. 
A)  was the result of genetic mutation. 
B)  was an example of the genetic exchange known as transformation. 
C)  supported the case for proteins as the genetic material. 
D)  could not be reproduced by other researchers. 
E)  was an example of conjugation.

Question 6

In mismatch repair, enzymes remove incorrectly-paired nucleotides.
__________________

Accepted Answer

A) True 
 B)False

Question 7

Figure 12-2
Use the figure to answer the corresponding question(s).  
-Refer to Figure 12-2.The structures represented by the letter E are called:

Accepted Answer

A)  leading fragments 
B)  Okazaki fragments. 
C)  replication forks. 
D)  nucleosomes. 
E)  DNA polymerases. 
A)  leading fragments 
B)  Okazaki fragments. 
C)  replication forks. 
D)  nucleosomes. 
E)  DNA polymerases.

Question 8

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
-catalyzes the synthesis of a strand of RNA

Accepted Answer

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

Question 9

Okazaki fragments are joined together by:

Accepted Answer

A)  RNA polymerase. 
B)  DNA ligase. 
C)  DNA polymerase. 
D)  RNA ligase. 
E)  primase. 
A)  RNA polymerase. 
B)  DNA ligase. 
C)  DNA polymerase. 
D)  RNA ligase. 
E)  primase.

Question 10

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
-starts a new strand of nucleotides opposite a short stretch of the DNA template strand

Accepted Answer

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

Question 11

Enzymes called __________ form breaks in the DNA molecules to prevent the formation of knots in the DNA helix during replication.

Accepted Answer

A)  topoisomerases 
B)  single-strand binding proteins 
C)  DNA polymerases 
D)  RNA polymerases 
E)  DNA ligases 
A)  topoisomerases 
B)  single-strand binding proteins 
C)  DNA polymerases 
D)  RNA polymerases 
E)  DNA ligases

Question 12

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
-prevents the double helix from re-forming

Accepted Answer

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

Question 13

Why does DNA synthesis only proceed in the 5' to 3' direction?

Accepted Answer

A)  Because DNA polymerases can only add nucleotides to the 3' end of a polynucleotide strand. 
B)  Because the 3' end of the polynucleotide molecule is more electronegative than the 5'end. 
C)  Because that is the direction in which the two strands of DNA unzip. 
D)  Because that is the only direction that the polymerase can be oriented. 
E)  Because the chromosomes are always aligned in the 5'to 3' direction in the nucleus. 
A)  Because DNA polymerases can only add nucleotides to the 3' end of a polynucleotide strand. 
B)  Because the 3' end of the polynucleotide molecule is more electronegative than the 5'end. 
C)  Because that is the direction in which the two strands of DNA unzip. 
D)  Because that is the only direction that the polymerase can be oriented. 
E)  Because the chromosomes are always aligned in the 5'to 3' direction in the nucleus.

Question 14

What is meant by the "directionality" of the strands of a DNA molecule? Explain how this directionality is ultimately responsible for Okazaki fragments.

Accepted Answer

Concepts to Consider: The anti

Question 15

Primase is the enzyme responsible for:

Accepted Answer

A)  unwinding the DNA double strand to allow DNA polymerase access to the template DNA. 
B)  introducing nicks into the DNA double strand in order to prevent the formation of knots. 
C)  hydrolyzing ATP to facilitate DNA unwinding. 
D)  making short strands of RNA at the site of replication initiation. 
E)  forming a replication fork in the DNA double helix. 
A)  unwinding the DNA double strand to allow DNA polymerase access to the template DNA. 
B)  introducing nicks into the DNA double strand in order to prevent the formation of knots. 
C)  hydrolyzing ATP to facilitate DNA unwinding. 
D)  making short strands of RNA at the site of replication initiation. 
E)  forming a replication fork in the DNA double helix.

Question 16

Two chains of DNA must run in __________ direction(s) and must be __________ if they are to bond with each other.

Accepted Answer

A)  the same; uncomplementary 
B)  opposite; uncomplementary 
C)  parallel; uncomplementary 
D)  parallel; complementary 
E)  antiparallel; complementary 
A)  the same; uncomplementary 
B)  opposite; uncomplementary 
C)  parallel; uncomplementary 
D)  parallel; complementary 
E)  antiparallel; complementary

Question 17

One of the pyrimidine bases in a DNA molecule is adenine.
__________________

Accepted Answer

A) True 
 B)False

Question 18

In replication, once the DNA strands have been separated, reformation of the double helix is prevented by:

Accepted Answer

A)  DNA helicase enzyme. 
B)  single-strand binding proteins. 
C)  DNA polymerases. 
D)  ATP. 
E)  GTP. 
A)  DNA helicase enzyme. 
B)  single-strand binding proteins. 
C)  DNA polymerases. 
D)  ATP. 
E)  GTP.

Question 19

Figure 12-2
Use the figure to answer the corresponding question(s).  
-Which of the following statements concerning nucleotide excision repair is FALSE?

Accepted Answer

A)  It is a type of mismatch repair. 
B)  It involves a nuclease. 
C)  It involves a DNA polymerase. 
D)  It involves DNA ligase. 
E)  It is implicated in xeroderma pigmentosum. 
A)  It is a type of mismatch repair. 
B)  It involves a nuclease. 
C)  It involves a DNA polymerase. 
D)  It involves DNA ligase. 
E)  It is implicated in xeroderma pigmentosum.

Question 20

How may the degradation of telomeres result in cellular aging?

Accepted Answer

Concepts to Consider: Telomeres, which a

Exam 12: Dna: the Carrier of Genetic Information

List the steps and components involved in the process of DNA replication.

Figure 12-2 Use the figure to answer the corresponding question(s). -Refer to Figure 12-2.The enzyme represented by the letter D is responsible for:

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 -joins Okazaki fragments

In one strand of a DNA molecule, adjacent nucleotides are joined by a phosphodiester linkage. __________________

In the experiments of Griffith, the conversion of nonlethal R-strain bacteria to lethal S-strain bacteria:

In mismatch repair, enzymes remove incorrectly-paired nucleotides. __________________

Figure 12-2 Use the figure to answer the corresponding question(s). -Refer to Figure 12-2.The structures represented by the letter E are called:

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 -catalyzes the synthesis of a strand of RNA

Okazaki fragments are joined together by:

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 -starts a new strand of nucleotides opposite a short stretch of the DNA template strand

Enzymes called __________ form breaks in the DNA molecules to prevent the formation of knots in the DNA helix during replication.

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 -prevents the double helix from re-forming

Why does DNA synthesis only proceed in the 5' to 3' direction?

What is meant by the "directionality" of the strands of a DNA molecule? Explain how this directionality is ultimately responsible for Okazaki fragments.

Primase is the enzyme responsible for:

Two chains of DNA must run in __________ direction(s) and must be __________ if they are to bond with each other.

One of the pyrimidine bases in a DNA molecule is adenine. __________________

In replication, once the DNA strands have been separated, reformation of the double helix is prevented by:

Figure 12-2 Use the figure to answer the corresponding question(s). -Which of the following statements concerning nucleotide excision repair is FALSE?

How may the degradation of telomeres result in cellular aging?

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

Filters

Two chains of DNA must run in direction(s) and must be if they are to bond with each other.