Question 1

Eukaryotic genes do not contain transposons.

Accepted Answer

A) True 
 B)False

Question 2

Specific types of proteins can attach to long-lived mRNA molecules to prevent their ___________ when the cell does not need their protein product.

Accepted Answer

The answer of Specific types of proteins can attach to...

Question 3

A repressor protein binds to the operator of a group of genes to turn ______ [on or off?] their gene expression.

Accepted Answer

The answer of A repressor protein binds to the operator...

Question 4

In eukaryotes, some genes with related functions are found on different chromosomes.

Accepted Answer

A) True 
 B)False

Question 5

Regulatory proteins bind to regulatory ___ sequences.

Accepted Answer

The answer of Regulatory proteins bind to regulatory ___ sequences....

Question 6

The fact that the DNA sequences of most homeotic genes are very similar in a wide variety of animals suggests that

Accepted Answer

A)  homeotic genes are in a location of the genome that rarely undergoes mutation. 
B)  homeotic genes probably evolved millions of years ago in the first animals. 
C)  mutations in homeotic genes have little impact on an organism. 
D)  homeotic genes play a minor role in the process of development. 
A)  homeotic genes are in a location of the genome that rarely undergoes mutation. 
B)  homeotic genes probably evolved millions of years ago in the first animals. 
C)  mutations in homeotic genes have little impact on an organism. 
D)  homeotic genes play a minor role in the process of development.

Question 7

During interphase, the genes that are most tightly packed

Accepted Answer

A)  are being expressed more rapidly than loosely packed genes. 
B)  are not being expressed, because the proteins needed for transcription can't reach them. 
C)  are more responsive to proteins necessary for transcription. 
D)  have greater access to the promoters that are packed with them. 
A)  are being expressed more rapidly than loosely packed genes. 
B)  are not being expressed, because the proteins needed for transcription can't reach them. 
C)  are more responsive to proteins necessary for transcription. 
D)  have greater access to the promoters that are packed with them.

Question 8

_______ DNA consists of stretches of nucleotides that separate genes.

Accepted Answer

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

Question 9

How can a cell contain DNA molecules that are much longer than the cell?

Accepted Answer

A)  The cell expands to fit the DNA inside. 
B)  DNA not used by that cell is deleted. 
C)  DNA is very narrow and tightly packed. 
D)  RNA copies allow DNA to dissolve. 
A)  The cell expands to fit the DNA inside. 
B)  DNA not used by that cell is deleted. 
C)  DNA is very narrow and tightly packed. 
D)  RNA copies allow DNA to dissolve.

Question 10

Gene _______ is the synthesis of a gene's protein or RNA product.

Accepted Answer

The answer of Gene _______ is the synthesis of a...

Question 11

Which of the following choices might cause an intron to be read as part of a coding gene?

Accepted Answer

A)  a frameshift mutation 
B)  the binding of the mRNA codon to the tRNA anticodon 
C)  a change in the coils of the DNA packing system 
D)  a rapid breakdown of mRNA molecules 
A)  a frameshift mutation 
B)  the binding of the mRNA codon to the tRNA anticodon 
C)  a change in the coils of the DNA packing system 
D)  a rapid breakdown of mRNA molecules

Question 12

Why might it not be surprising to learn that human DNA contains bacterial genes?

Accepted Answer

A)  Eukaryotes were formed when ancient prokaryotic cells engulfed each other. 
B)  Bacterial genes are present in the nuclei of all known organisms. 
C)  Bacteria insert their genomes into host cells in order to reproduce. 
D)  Human cells engulf bacteria as a source of raw material for DNA synthesis. 
A)  Eukaryotes were formed when ancient prokaryotic cells engulfed each other. 
B)  Bacterial genes are present in the nuclei of all known organisms. 
C)  Bacteria insert their genomes into host cells in order to reproduce. 
D)  Human cells engulf bacteria as a source of raw material for DNA synthesis.

Question 13

Which of the following is not true? Organisms turn genes on and off

Accepted Answer

A)  depending on the function of the cell. 
B)  in response to environmental changes. 
C)  to cause certain developmental changes. 
D)  to switch from prokaryotic to eukaryotic status. 
A)  depending on the function of the cell. 
B)  in response to environmental changes. 
C)  to cause certain developmental changes. 
D)  to switch from prokaryotic to eukaryotic status.

Question 14

Development is controlled by

Accepted Answer

A)  spacer sequences. 
B)  different homeotic genes in different organisms. 
C)  similar homeotic genes in different animals. 
D)  repressor proteins. 
A)  spacer sequences. 
B)  different homeotic genes in different organisms. 
C)  similar homeotic genes in different animals. 
D)  repressor proteins.

Question 15

DNA chips are

Accepted Answer

A)  expressed in every cell of an organism. 
B)  excised from RNA molecules. 
C)  unneeded bits of DNA. 
D)  useful for monitoring gene expression. 
A)  expressed in every cell of an organism. 
B)  excised from RNA molecules. 
C)  unneeded bits of DNA. 
D)  useful for monitoring gene expression.

Question 16

One method eukaryotes use to control gene expression is to break down a gene's protein product.

Accepted Answer

A) True 
 B)False

Question 17

The genes that act as the "master switches" for gene cascades are

Accepted Answer

A)  housekeeping genes. 
B)  homeotic genes. 
C)  genes in introns. 
D)  spacer genes. 
A)  housekeeping genes. 
B)  homeotic genes. 
C)  genes in introns. 
D)  spacer genes.

Question 18

The _______ of eukaryotes vary greatly in size from 12 million base pairs in some to more than a trillion base pairs in other.

Accepted Answer

The answer of The _______ of eukaryotes vary greatly in...

Question 19

Once a gene is turned on, it cannot be turned off.

Accepted Answer

A) True 
 B)False

Question 20

During an organism's development, sets of gene products interact with each other in a process known as

Accepted Answer

A)  a gene cascade. 
B)  a homeotic cascade. 
C)  a DNA chip. 
D)  housekeeping. 
A)  a gene cascade. 
B)  a homeotic cascade. 
C)  a DNA chip. 
D)  housekeeping.

Exam 14: Control of Gene Expression

Eukaryotic genes do not contain transposons.

Specific types of proteins can attach to long-lived mRNA molecules to prevent their ___________ when the cell does not need their protein product.

A repressor protein binds to the operator of a group of genes to turn ______ [on or off?] their gene expression.

In eukaryotes, some genes with related functions are found on different chromosomes.

Regulatory proteins bind to regulatory ___ sequences.

The fact that the DNA sequences of most homeotic genes are very similar in a wide variety of animals suggests that

During interphase, the genes that are most tightly packed

_______ DNA consists of stretches of nucleotides that separate genes.

How can a cell contain DNA molecules that are much longer than the cell?

Gene _______ is the synthesis of a gene's protein or RNA product.

Which of the following choices might cause an intron to be read as part of a coding gene?

Why might it not be surprising to learn that human DNA contains bacterial genes?

Which of the following is not true? Organisms turn genes on and off

Development is controlled by

DNA chips are

One method eukaryotes use to control gene expression is to break down a gene's protein product.

The genes that act as the "master switches" for gene cascades are

The _______ of eukaryotes vary greatly in size from 12 million base pairs in some to more than a trillion base pairs in other.

Once a gene is turned on, it cannot be turned off.

During an organism's development, sets of gene products interact with each other in a process known as

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

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Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

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Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

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