Question 1

Which of the following is NOT true according to Chargaffʹs base pairing rule?

Accepted Answer

A)  A + T = G + C in amount. 
B)  A = T in amount. 
C)  A + G = T + C in amount. 
D)  G = C in amount. 
A)  A + T = G + C in amount. 
B)  A = T in amount. 
C)  A + G = T + C in amount. 
D)  G = C in amount.

Question 2

Regarding the structure of DNA, which of the following is like a spiral staircase?

Accepted Answer

A)  Phosphate 
B)  Hydrogen bonds 
C)  Deoxyribose 
D)  Double helix 
E)  Covalent bonds 
A)  Phosphate 
B)  Hydrogen bonds 
C)  Deoxyribose 
D)  Double helix 
E)  Covalent bonds

Question 3

What two bases in the DNA molecule are double-ringed?

Accepted Answer

A)  Guanine and cytosine 
B)  Thymine and cytosine 
C)  Guanine and adenine 
D)  Uracil and guanine 
E)  Thymine and uracil 
A)  Guanine and cytosine 
B)  Thymine and cytosine 
C)  Guanine and adenine 
D)  Uracil and guanine 
E)  Thymine and uracil

Question 4

If the DNA sequence is G-C-C-T-A-T in one polynucleotide chain, then the sequence found in the other polynucleotide chain must be

Accepted Answer

A)  G-C-C-T-A-T. 
B)  C-G-G-A-T-A. 
C)  A-T-T-C-G-C. 
D)  C-G-G-A-U-A. 
E)  G-C-C-A-T-A. 
A)  G-C-C-T-A-T. 
B)  C-G-G-A-T-A. 
C)  A-T-T-C-G-C. 
D)  C-G-G-A-U-A. 
E)  G-C-C-A-T-A.

Question 5

Segments of DNA that are made during replication are joined together by __________.

Accepted Answer

The answer of Segments of DNA that are made during...

Question 6

DNA is copied within eukaryotic cells in the process of__________ to produce two identical DNA molecules.

Accepted Answer

The answer of DNA is copied within eukaryotic cells in...

Question 7

How are the four types of nitrogen-containing bases in DNA held together in the double helix of DNA?

Accepted Answer

The bases

Question 8

Based on this figure, which type(s) of bacteria would you expect to be isolated from the dead mouse in the final experiment (involving the mixture of bacterial strains)?

Accepted Answer

A)  Living R-strain only 
B)  At least some living S-strain 
C)  Heat-killed S-strain only 
D)  Living R-strain and heat-killed S-strain only 
A)  Living R-strain only 
B)  At least some living S-strain 
C)  Heat-killed S-strain only 
D)  Living R-strain and heat-killed S-strain only

Question 9

Which component of a DNA nucleotide could be removed without breaking the polynucleotide chain?

Accepted Answer

A)  Phosphate 
B)  Deoxyribose 
C)  Ribose 
D)  Nitrogen base 
A)  Phosphate 
B)  Deoxyribose 
C)  Ribose 
D)  Nitrogen base

Question 10

Chargaff found that the amounts of the four bases vary from species to species, but the amount of adenine always equals the amount of guanine and the amount of thymine always equals the amount of cytosine.

Accepted Answer

A) True 
 B)False

Question 11

ʺChargaffʹs ruleʺ for base pairing in DNA is that

Accepted Answer

A)  A bonds with C, and G bonds with T. 
B)  A bonds with G, and C bonds with T. 
C)  A bonds with T, and G bonds with C. 
D)  the amount of A = the amount of C, and the amount of G = the amount of T. 
E)  the amount of A = the amount of G, and the amount of C = the amount of T. 
A)  A bonds with C, and G bonds with T. 
B)  A bonds with G, and C bonds with T. 
C)  A bonds with T, and G bonds with C. 
D)  the amount of A = the amount of C, and the amount of G = the amount of T. 
E)  the amount of A = the amount of G, and the amount of C = the amount of T.

Question 12

Watson and Crick are credited with the discovery and description of the DNA

Accepted Answer

A)  deoxyribose sugar. 
B)  double helix. 
C)  phosphate group. 
D)  covalent bonds. 
E)  hydrogen bonds. 
A)  deoxyribose sugar. 
B)  double helix. 
C)  phosphate group. 
D)  covalent bonds. 
E)  hydrogen bonds.

Question 13

Specific segments of DNA that code for a specific protein are called

Accepted Answer

A)  nucleoli. 
B)  nuclei. 
C)  genes. 
D)  chromosomes. 
E)  mutations. 
A)  nucleoli. 
B)  nuclei. 
C)  genes. 
D)  chromosomes. 
E)  mutations.

Question 14

Which of the following is TRUE in the Watson-Crick model of DNA?

Accepted Answer

A)  Ribose always bonds to a nitrogenous base. 
B)  Four different types of bases are found in DNA. 
C)  Phosphate groups always bond to ribose. 
D)  During replication, the phosphate groups are copied but the base sequence is not copied. 
E)  The number of adenines equals the number of guanines. 
A)  Ribose always bonds to a nitrogenous base. 
B)  Four different types of bases are found in DNA. 
C)  Phosphate groups always bond to ribose. 
D)  During replication, the phosphate groups are copied but the base sequence is not copied. 
E)  The number of adenines equals the number of guanines.

Question 15

Briefly describe the basic process of DNA replication.

Accepted Answer

DNA helicase unwinds the double helix of

Question 16

When Griffith experimented with two types of Streptococcus pneumoniae, he found that if the

Accepted Answer

A)  deadly strain was heat-killed before injection, the mice died. 
B)  non-deadly strain was mixed with the heat -killed, deadly strain before injection, the mice died. 
C)  non-deadly strain was mixed with the heat -killed, deadly strain before injection, the mice lived. 
D)  non-deadly strain was mixed with the heat -killed, non-deadly strain before injection, the mice died. 
A)  deadly strain was heat-killed before injection, the mice died. 
B)  non-deadly strain was mixed with the heat -killed, deadly strain before injection, the mice died. 
C)  non-deadly strain was mixed with the heat -killed, deadly strain before injection, the mice lived. 
D)  non-deadly strain was mixed with the heat -killed, non-deadly strain before injection, the mice died.

Question 17

Which of the following is TRUE regarding the genetic information in the cells of your body?

Accepted Answer

A)  Different kinds of body cells contain different genetic information. 
B)  The genetic information in almost all of your body cells is identical. 
C)  The genetic information in your body cells changes in a predictable manner as you grow and develop. 
D)  Each type of body cell contains only the genetic information it needs to be that type of cell. 
A)  Different kinds of body cells contain different genetic information. 
B)  The genetic information in almost all of your body cells is identical. 
C)  The genetic information in your body cells changes in a predictable manner as you grow and develop. 
D)  Each type of body cell contains only the genetic information it needs to be that type of cell.

Question 18

By the early 1900s, scientists had determined that heritable information existed as discrete units called genes, which were located on__________ .

Accepted Answer

The answer of By the early 1900s, scientists had determined...

Question 19

In one strand of DNA, the nucleotide sequence is 5ʹ-A-T-G-C-3ʹ. The complementary sequence in the other strand must be

Accepted Answer

A)  5ʹ-A-T-G-C-3ʹ. 
B)  5ʹ-C-G-T-A-3ʹ. 
C)  3ʹ-T-A-C-G-5ʹ. 
D)  3ʹ-G-C-A-T-5ʹ. 
A)  5ʹ-A-T-G-C-3ʹ. 
B)  5ʹ-C-G-T-A-3ʹ. 
C)  3ʹ-T-A-C-G-5ʹ. 
D)  3ʹ-G-C-A-T-5ʹ.

Question 20

Semiconservative DNA replication means that

Accepted Answer

A)  A pairs with T and G pairs with C. 
B)  the old DNA remains completely intact. 
C)  each new DNA molecule has half the DNA from the old one. 
D)  the old DNA is completely broken down. 
E)  only half of the DNA is replicated. 
A)  A pairs with T and G pairs with C. 
B)  the old DNA remains completely intact. 
C)  each new DNA molecule has half the DNA from the old one. 
D)  the old DNA is completely broken down. 
E)  only half of the DNA is replicated.

Exam 12: DNA: The Molecule of Heredity

Which of the following is NOT true according to Chargaffʹs base pairing rule?

Regarding the structure of DNA, which of the following is like a spiral staircase?

What two bases in the DNA molecule are double-ringed?

If the DNA sequence is G-C-C-T-A-T in one polynucleotide chain, then the sequence found in the other polynucleotide chain must be

Segments of DNA that are made during replication are joined together by __________.

DNA is copied within eukaryotic cells in the process of__________ to produce two identical DNA molecules.

How are the four types of nitrogen-containing bases in DNA held together in the double helix of DNA?

Based on this figure, which type(s) of bacteria would you expect to be isolated from the dead mouse in the final experiment (involving the mixture of bacterial strains)?

Which component of a DNA nucleotide could be removed without breaking the polynucleotide chain?

Chargaff found that the amounts of the four bases vary from species to species, but the amount of adenine always equals the amount of guanine and the amount of thymine always equals the amount of cytosine.

ʺChargaffʹs ruleʺ for base pairing in DNA is that

Watson and Crick are credited with the discovery and description of the DNA

Specific segments of DNA that code for a specific protein are called

Which of the following is TRUE in the Watson-Crick model of DNA?

Briefly describe the basic process of DNA replication.

When Griffith experimented with two types of Streptococcus pneumoniae, he found that if the

Which of the following is TRUE regarding the genetic information in the cells of your body?

By the early 1900s, scientists had determined that heritable information existed as discrete units called genes, which were located on__________ .

In one strand of DNA, the nucleotide sequence is 5ʹ-A-T-G-C-3ʹ. The complementary sequence in the other strand must be

Semiconservative DNA replication means that

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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