Question 1

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

Accepted Answer

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

Question 2

The sequence of subunits in the DNA "backbone" is:

Accepted Answer

A) -base-phosphate-base-phosphate-base-phosphate-. 
B) -phosphate-sugar-phosphate-sugar-phosphate-sugar-. 
C) -sugar-base-sugar-base-sugar-base-sugar-base-. 
D) -base-sugar-phosphate-base-sugar-phosphate-. 
E) -base-phosphate-sugar-base-phosphate-sugar-. 
A) -base-phosphate-base-phosphate-base-phosphate-. 
B) -phosphate-sugar-phosphate-sugar-phosphate-sugar-. 
C) -sugar-base-sugar-base-sugar-base-sugar-base-. 
D) -base-sugar-phosphate-base-sugar-phosphate-. 
E) -base-phosphate-sugar-base-phosphate-sugar-.

Question 3

Which of the following is NOT true according to Chargaff's base pairing rule?

Accepted Answer

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

Question 4

In the comparison of a DNA molecule to a twisted ladder, the rungs of the ladder are:

Accepted Answer

A) nitrogenous bases linked together. 
B) deoxyribose linked to phosphate. 
C) deoxyribose linked to sulfate. 
D) nitrogenous bases linked to phosphate. 
E) the backbones of the molecule. 
A) nitrogenous bases linked together. 
B) deoxyribose linked to phosphate. 
C) deoxyribose linked to sulfate. 
D) nitrogenous bases linked to phosphate. 
E) the backbones of the molecule.

Question 5

DNA ligase is important in the replication process because it can bind together segments of DNA. True or False?

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

The bases

Question 7

How many bases are in a DNA molecule?

Accepted Answer

A) two 
B) four 
C) hundreds or thousands 
D) millions or billions 
A) two 
B) four 
C) hundreds or thousands 
D) millions or billions

Question 8

The basic subunits of DNA are the ________.

Accepted Answer

The answer of The basic subunits of DNA are the...

Question 9

If cytosine makes up 22% of the bases in a sample of DNA from an organism, then adenine makes up what percentage of the bases?

Accepted Answer

The answer of If cytosine makes up 22% of the...

Question 10

How many DNA base pairs are in a typical gene?

Accepted Answer

A) two 
B) four 
C) hundreds or thousands 
D) millions or billions 
A) two 
B) four 
C) hundreds or thousands 
D) millions or billions

Exam 11: Dna: the Molecule of Heredity

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

The sequence of subunits in the DNA "backbone" is:

Which of the following is NOT true according to Chargaff's base pairing rule?

In the comparison of a DNA molecule to a twisted ladder, the rungs of the ladder are:

DNA ligase is important in the replication process because it can bind together segments of DNA. True or False?

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

How many bases are in a DNA molecule?

The basic subunits of DNA are the ________.

If cytosine makes up 22% of the bases in a sample of DNA from an organism, then adenine makes up what percentage of the bases?

How many DNA base pairs are in a typical gene?

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

The Continuity of Life: Cellular 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 Amidst 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

How Do Ecosystems Work

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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