Question 1

The sequence of DNA differs among individuals within a species. This is the basis for

Accepted Answer

A) mutation. 
B) protein structure. 
C) base pairing. 
D) variations in phenotypes. 
A) mutation. 
B) protein structure. 
C) base pairing. 
D) variations in phenotypes.

Question 2

Which of the following is directly involved in the regulation of transcription?

Accepted Answer

A) ribosomes 
B) tRNA 
C) DNA polymerase 
D) repressor protein 
A) ribosomes 
B) tRNA 
C) DNA polymerase 
D) repressor protein

Question 3

During replication, each "old" DNA strand serves as a template for a new strand.

Accepted Answer

A) True 
 B)False

Question 4

Enzymes proofread base pairing during DNA replication.

Accepted Answer

A) True 
 B)False

Question 5

Most eukaryotic DNA is

Accepted Answer

A) single-stranded. 
B) noncoding. 
C) regulatory sequences. 
D) prokaryotic. 
A) single-stranded. 
B) noncoding. 
C) regulatory sequences. 
D) prokaryotic.

Question 6

All cells in an organism contain a full copy of that organism's DNA. Your ears do not produce digestive enzymes because

Accepted Answer

A) stomach cells have extra DNA. 
B) ear cells have nonfunctional DNA. 
C) some DNA is deleted from cells where it is not needed. 
D) different genes are expressed in different parts of an organism. 
A) stomach cells have extra DNA. 
B) ear cells have nonfunctional DNA. 
C) some DNA is deleted from cells where it is not needed. 
D) different genes are expressed in different parts of an organism.

Question 7

Damaged DNA may be repaired by a special class of

Accepted Answer

A) nucleotides. 
B) proteins. 
C) deoxyribose molecules. 
D) phosphate bonds. 
A) nucleotides. 
B) proteins. 
C) deoxyribose molecules. 
D) phosphate bonds.

Question 8

DNA ____________________ results in the copying of a DNA molecule.

Accepted Answer

The answer of DNA ____________________ results in the copying of...

Question 9

Which of the following would not be a required biological property of genetic material?

Accepted Answer

A) It must be variable. 
B) It must exist in paired copies. 
C) It must be able to be copied accurately. 
D) It must contain the information needed for life. 
A) It must be variable. 
B) It must exist in paired copies. 
C) It must be able to be copied accurately. 
D) It must contain the information needed for life.

Question 10

Where in this diagram of the flow of genetic information of the cell would translation occur?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 11

Which of the following is not a base found in DNA?

Accepted Answer

A) thymine 
B) adenine 
C) guanine 
D) uracil 
A) thymine 
B) adenine 
C) guanine 
D) uracil

Question 12

The 220 different cell types in the human body each contain all of the same DNA found in every other cell type.

Accepted Answer

A) True 
 B)False

Question 13

The most common way for cells to control gene expression is by controlling

Accepted Answer

A) translation. 
B) transcription. 
C) spacer DNA frequency. 
D) mutation. 
A) translation. 
B) transcription. 
C) spacer DNA frequency. 
D) mutation.

Question 14

The order of the base pairs in a DNA molecule

Accepted Answer

A) differs from species to species. 
B) is identical in all organisms. 
C) is identical in organisms of the same species. 
D) differs from cell to cell in a given organism. 
A) differs from species to species. 
B) is identical in all organisms. 
C) is identical in organisms of the same species. 
D) differs from cell to cell in a given organism.

Question 15

Replication of DNA cannot begin until

Accepted Answer

A) phosphate bonds between nucleotides are broken. 
B) hydrogen bonds between complementary bases are broken. 
C) covalent bonds between sugar molecules are broken. 
D) hydrogen bonds between nucleotides in one strand are broken. 
A) phosphate bonds between nucleotides are broken. 
B) hydrogen bonds between complementary bases are broken. 
C) covalent bonds between sugar molecules are broken. 
D) hydrogen bonds between nucleotides in one strand are broken.

Question 16

DNA is often damaged or may be replicated incorrectly. Which of the following is not true?

Accepted Answer

A) Humans do not have DNA repair proteins. 
B) A mutation in the gene for a DNA repair protein may make mutations in other genes more common. 
C) Certain proteins can repair damaged DNA. 
D) The vast majority of DNA damage is fixed. 
A) Humans do not have DNA repair proteins. 
B) A mutation in the gene for a DNA repair protein may make mutations in other genes more common. 
C) Certain proteins can repair damaged DNA. 
D) The vast majority of DNA damage is fixed.

Question 17

____________________ DNA consists of stretches of nucleotides that separate genes.

Accepted Answer

The answer of ____________________ DNA consists of stretches of nucleotides...

Question 18

Which of the following are removed from mRNA after transcription?

Accepted Answer

A) introns 
B) transposons 
C) spacer DNA 
D) exons 
A) introns 
B) transposons 
C) spacer DNA 
D) exons

Question 19

The enzymes involved in ATP synthesis in the mitochondria are likely to be encoded by _____ genes.

Accepted Answer

A) regulatory 
B) DNA repair 
C) housekeeping 
D) transposon 
A) regulatory 
B) DNA repair 
C) housekeeping 
D) transposon

Question 20

During DNA replication, the template strands of the original DNA molecule are complementary both to each other and to one of the new strands.

Accepted Answer

A) True 
 B)False

Exam 14: Dna and Genes

The sequence of DNA differs among individuals within a species. This is the basis for

Which of the following is directly involved in the regulation of transcription?

During replication, each "old" DNA strand serves as a template for a new strand.

Enzymes proofread base pairing during DNA replication.

Most eukaryotic DNA is

All cells in an organism contain a full copy of that organism's DNA. Your ears do not produce digestive enzymes because

Damaged DNA may be repaired by a special class of

DNA ____________________ results in the copying of a DNA molecule.

Which of the following would not be a required biological property of genetic material?

Where in this diagram of the flow of genetic information of the cell would translation occur?

Which of the following is not a base found in DNA?

The 220 different cell types in the human body each contain all of the same DNA found in every other cell type.

The most common way for cells to control gene expression is by controlling

The order of the base pairs in a DNA molecule

Replication of DNA cannot begin until

DNA is often damaged or may be replicated incorrectly. Which of the following is not true?

____________________ DNA consists of stretches of nucleotides that separate genes.

Which of the following are removed from mRNA after transcription?

The enzymes involved in ATP synthesis in the mitochondria are likely to be encoded by _____ genes.

During DNA replication, the template strands of the original DNA molecule are complementary both to each other and to one of the new strands.

The Nature of Science and the Characteristics of Life

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Stem Cells, Cancer, and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

From Gene to Protein

Dna Technology

How Evolution Works

Evolution of Populations

Speciation and the Origins of Biological Diversity

The Evolutionary History of Life

The Biosphere

Growth of Populations

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons, Muscles, and Movement

Defenses Against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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