Question 1

In DNA replication, the lagging strand

Accepted Answer

A)  is synthesized as a series of Okazaki fragments. 
B)  is synthesized as a complementary copy of the leading strand. 
C)  pairs with the leading strand by complementary base pairing. 
D)  is made up entirely of RNA primers. 
E)  is not synthesized until the synthesis of the leading strand is completed. 
A)  is synthesized as a series of Okazaki fragments. 
B)  is synthesized as a complementary copy of the leading strand. 
C)  pairs with the leading strand by complementary base pairing. 
D)  is made up entirely of RNA primers. 
E)  is not synthesized until the synthesis of the leading strand is completed.

Question 2

Match between columns
                        Premises: prevents formation of hydrogen bonds between complementary base pairs

Accepted Answer

The Answer of DNA polymerase and Topoisomerase and DNA helicase is...

Question 3

Compare DNA synthesis in prokaryotes and eukaryotes.

Accepted Answer

The process of DNA replication in prokar

Question 4

What happened in an experiment where normal cultured human cells were infected with a virus that carried DNA encoding for the telomerase catalytic subunit?

Accepted Answer

A)  The cells underwent more cell divisions than normal. 
B)  The cells underwent fewer cell divisions than normal. 
C)  The cells died almost immediately. 
D)  The cells did not express the foreign telomerase gene. 
E)  The cell cycle shortened. 
A)  The cells underwent more cell divisions than normal. 
B)  The cells underwent fewer cell divisions than normal. 
C)  The cells died almost immediately. 
D)  The cells did not express the foreign telomerase gene. 
E)  The cell cycle shortened.

Question 5

What allows each strand of DNA to serve as a template for a new DNA strand during replication?

Accepted Answer

A)  Covalent bonding between nucleotide bases 
B)  Hydrogen bonds between the deoxyribose and the phosphate groups 
C)  Complementary base pairing between purines and purines on opposite strands 
D)  Complementary base pairing between pyrimidines and pyrimidines on opposite strands 
E)  Complementary base pairing between purines and pyrimidines on opposite strands 
A)  Covalent bonding between nucleotide bases 
B)  Hydrogen bonds between the deoxyribose and the phosphate groups 
C)  Complementary base pairing between purines and purines on opposite strands 
D)  Complementary base pairing between pyrimidines and pyrimidines on opposite strands 
E)  Complementary base pairing between purines and pyrimidines on opposite strands

Question 6

Who first confirmed that the replication of DNA was semiconservative?

Accepted Answer

A)  Chargaff and Hershey 
B)  Watson and Crick 
C)  Avery and Griffith 
D)  Meselson and Stahl 
E)  Watson, Crick, and Wilkins 
A)  Chargaff and Hershey 
B)  Watson and Crick 
C)  Avery and Griffith 
D)  Meselson and Stahl 
E)  Watson, Crick, and Wilkins

Question 7

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

Question 8

Why is DNA able to store large amounts of information?

Accepted Answer

A)  It is composed of 20 different nucleotides. 
B)  Its nucleotides can be arranged in many possible sequences. 
C)  It is capable of assuming a wide variety of shapes. 
D)  Its sugars and phosphates can be arranged in many different sequences. 
E)  Its bases can be altered from purines to pyrimidines. 
A)  It is composed of 20 different nucleotides. 
B)  Its nucleotides can be arranged in many possible sequences. 
C)  It is capable of assuming a wide variety of shapes. 
D)  Its sugars and phosphates can be arranged in many different sequences. 
E)  Its bases can be altered from purines to pyrimidines.

Question 9

Errors in DNA replication can come from

Accepted Answer

A)  DNA polymerase. 
B)  DNA ligase. 
C)  complementary base pairing. 
D)  the sun's UV radiation. 
E)  Okazaki fragments. 
A)  DNA polymerase. 
B)  DNA ligase. 
C)  complementary base pairing. 
D)  the sun's UV radiation. 
E)  Okazaki fragments.

Question 10

What are special enzymes that recognize and remove the incorrectly paired nucleotides in DNA?

Accepted Answer

A)  Mismatch repair 
B)  Telomerase 
C)  Nucleotide excision repair 
D)  Apoptosis 
E)  Plasmids 
A)  Mismatch repair 
B)  Telomerase 
C)  Nucleotide excision repair 
D)  Apoptosis 
E)  Plasmids

Question 11

Adenine and thymine are held together by two hydrogen bonds in a double stranded DNA molecule.

Accepted Answer

A) True 
 B)False

Question 12

An RNA primer is synthesized by RNA primase.

Accepted Answer

A) True 
 B)False

Question 13

The first scientists to use Griffith's transformation assay to identify 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 14

Match between columns
                        Premises: produces breaks in the DNA molecules and then rejoins the strands to prevent supercoiling

Accepted Answer

The Answer of DNA primase and DNA ligase and DNA is...

Question 15

Why does DNA synthesis proceed in a 5′ to 3′ direction?

Accepted Answer

A)  DNA polymerases can only add nucleotides to the 3′ end of a polynucleotide strand. 
B)  The 3′ end of the polynucleotide molecule contains more phosphates than the 5′ end. 
C)  DNA unzips in the 5¢ to 3¢ direction. 
D)  DNA strands are parallel to each other. 
E)  Chromosomes are aligned in the 5′ to 3′ direction in the nucleus. 
A)  DNA polymerases can only add nucleotides to the 3′ end of a polynucleotide strand. 
B)  The 3′ end of the polynucleotide molecule contains more phosphates than the 5′ end. 
C)  DNA unzips in the 5¢ to 3¢ direction. 
D)  DNA strands are parallel to each other. 
E)  Chromosomes are aligned in the 5′ to 3′ direction in the nucleus.

Question 16

DNA Pol III catalyzes the addition of successive nucleotides to the 5' end of a growing polynucleotide chain. 
 ​

Accepted Answer

A) True 
 B)False

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

How are eukaryotic chromosomes replicated?

Accepted Answer

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

Question 19

Because a newly synthesized DNA molecule contains ____, the replication process is said to be semiconservative.

Accepted Answer

A)  two new strands 
B)  one parental strand and one new strand 
C)  two parental strands 
D)  half purines and half pyrimidines 
E)  nucleotides 
A)  two new strands 
B)  one parental strand and one new strand 
C)  two parental strands 
D)  half purines and half pyrimidines 
E)  nucleotides

Question 20

Match between columns
                        Premises: used proteins labeled with 35S and DNA labeled with 32P to demonstrate that viral DNA entered bacterial cells, but viral proteins did not

Accepted Answer

The Answer of Avery and Griffith and Chargaff and Hershey is...

Exam 12: DNA: The Carrier of Genetic Information

In DNA replication, the lagging strand

Compare DNA synthesis in prokaryotes and eukaryotes.

What happened in an experiment where normal cultured human cells were infected with a virus that carried DNA encoding for the telomerase catalytic subunit?

What allows each strand of DNA to serve as a template for a new DNA strand during replication?

Who first confirmed that the replication of DNA was semiconservative?

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

Why is DNA able to store large amounts of information?

Errors in DNA replication can come from

What are special enzymes that recognize and remove the incorrectly paired nucleotides in DNA?

Adenine and thymine are held together by two hydrogen bonds in a double stranded DNA molecule.

An RNA primer is synthesized by RNA primase.

The first scientists to use Griffith's transformation assay to identify genetic material were

Why does DNA synthesis proceed in a 5′ to 3′ direction?

DNA Pol III catalyzes the addition of successive nucleotides to the 5' end of a growing polynucleotide chain. ​

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

How are eukaryotic chromosomes replicated?

Because a newly synthesized DNA molecule contains ____, the replication process is said to be semiconservative.

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

DNA Pol III catalyzes the addition of successive nucleotides to the 5' end of a growing polynucleotide chain.