Question 1

In plants,the average expression of genes involved in cold tolerance is _________.

Accepted Answer

A)  highest just before daytime hours 
B)  lowest just before nighttime hours 
C)  highest just before nighttime hours 
D)  constant during nighttime and daytime hours 
E)  the constant during nighttime hours 
A)  highest just before daytime hours 
B)  lowest just before nighttime hours 
C)  highest just before nighttime hours 
D)  constant during nighttime and daytime hours 
E)  the constant during nighttime hours

Question 2

Cell differentiation can be defined as ___________________.

Accepted Answer

A)  protein synthesis 
B)  different cell lineages expressing different subsets of their genes during development 
C)  all cell lineages expressing the same genes during development 
D)  different cell lineages expressing all subsets of their genes during development 
E)  different genomes present in different cell lineages 
A)  protein synthesis 
B)  different cell lineages expressing different subsets of their genes during development 
C)  all cell lineages expressing the same genes during development 
D)  different cell lineages expressing all subsets of their genes during development 
E)  different genomes present in different cell lineages

Question 3

Classification. Choose the proper item below for the following statements.
-Used in allosteric regulation of the lac operon

Accepted Answer

A) Operon 
B) Operator 
C) Promoter 
D) Repressor protein 
E) Regulator protein 
A) Operon 
B) Operator 
C) Promoter 
D) Repressor protein 
E) Regulator protein

Question 4

Why is SRY considered to be a master gene?

Accepted Answer

SRY is one of 78 genes found on the Y ch

Question 5

Transcription factors bind directly to ___________________.

Accepted Answer

A)  elongating polypeptide chains 
B)  DNA 
C)  RNA 
D)  final proteins 
E)  ribosomal units 
A)  elongating polypeptide chains 
B)  DNA 
C)  RNA 
D)  final proteins 
E)  ribosomal units

Question 6

The position of a cell within an embryo during embryonic development determines ________________.

Accepted Answer

A)  which genes will be knocked out 
B)  the gender of the embryo 
C)  whether the cell will differentiate 
D)  which master genes are turned on 
E)  whether maternal mRNAs will be translated 
A)  which genes will be knocked out 
B)  the gender of the embryo 
C)  whether the cell will differentiate 
D)  which master genes are turned on 
E)  whether maternal mRNAs will be translated

Question 7

Repressors ________________.

Accepted Answer

A)  bind to operators 
B)  lie between operators 
C)  lie between promoters 
D)  lie downstream from operators 
E)  are part of an operon 
A)  bind to operators 
B)  lie between operators 
C)  lie between promoters 
D)  lie downstream from operators 
E)  are part of an operon

Question 8

Transcription factors include ______________.

Accepted Answer

A)  promoters and insulators 
B)  silencers and enhancers 
C)  activators and repressors 
D)  activators, repressors, and translational factors 
E)  enhancers and repressors 
A)  promoters and insulators 
B)  silencers and enhancers 
C)  activators and repressors 
D)  activators, repressors, and translational factors 
E)  enhancers and repressors

Question 9

Which of the following accounts for the negative control of operons?

Accepted Answer

A)  Promoters 
B)  Repressors 
C)  Structural genes 
D)  Operators 
E)  Deactivators 
A)  Promoters 
B)  Repressors 
C)  Structural genes 
D)  Operators 
E)  Deactivators

Question 10

On its own,the product of the C group gene alone in Arabidopsis thaliana triggers ____________________.

Accepted Answer

A)  sepal development 
B)  stamen development 
C)  carpel development 
D)  petal development 
E)  stamen and carpel development 
A)  sepal development 
B)  stamen development 
C)  carpel development 
D)  petal development 
E)  stamen and carpel development

Question 11

Choose the one most appropriate answer for each.
-Dosage compensation

Accepted Answer

A) A condensed X chromosome 
B) Protein that combines with DNA all along its length 
C) Attaches or detaches from operator to regulate transcription 
D) Portion of the operon that binds RNA polymerase 
E) Genes that induce expression of other genes
F)Genes controlling the development of specific body parts
G)Mechanism of equalizing gene expression between the sexes
H)Binding sites on DNA for regulatory proteins that increase transcription rates 
A) A condensed X chromosome 
B) Protein that combines with DNA all along its length 
C) Attaches or detaches from operator to regulate transcription 
D) Portion of the operon that binds RNA polymerase 
E) Genes that induce expression of other genes
F)Genes controlling the development of specific body parts
G)Mechanism of equalizing gene expression between the sexes
H)Binding sites on DNA for regulatory proteins that increase transcription rates

Question 12

Classification. Choose the proper item below for the following statements.
-This contains regulator,promoter,and operator regions

Accepted Answer

A) Operon 
B) Operator 
C) Promoter 
D) Repressor protein 
E) Regulator protein 
A) Operon 
B) Operator 
C) Promoter 
D) Repressor protein 
E) Regulator protein

Question 13

The correspondence between homeotic genes of distantly related animals provides evidence of ________________.

Accepted Answer

The answer of The correspondence between homeotic genes of distantly...

Question 14

Which statement is false concerning X chromosome inactivation?

Accepted Answer

A)  It is an accident of evolution. 
B)  It is an example of dosage compensation. 
C)  It is a gene control mechanism. 
D)  It is responsible for the normal development of female embryos. 
E)  It does not occur in males. 
A)  It is an accident of evolution. 
B)  It is an example of dosage compensation. 
C)  It is a gene control mechanism. 
D)  It is responsible for the normal development of female embryos. 
E)  It does not occur in males.

Question 15

Choose the one most appropriate answer for each.
-Homeotic genes

Accepted Answer

A) A condensed X chromosome 
B) Protein that combines with DNA all along its length 
C) Attaches or detaches from operator to regulate transcription 
D) Portion of the operon that binds RNA polymerase 
E) Genes that induce expression of other genes
F)Genes controlling the development of specific body parts
G)Mechanism of equalizing gene expression between the sexes
H)Binding sites on DNA for regulatory proteins that increase transcription rates 
A) A condensed X chromosome 
B) Protein that combines with DNA all along its length 
C) Attaches or detaches from operator to regulate transcription 
D) Portion of the operon that binds RNA polymerase 
E) Genes that induce expression of other genes
F)Genes controlling the development of specific body parts
G)Mechanism of equalizing gene expression between the sexes
H)Binding sites on DNA for regulatory proteins that increase transcription rates

Question 16

The two different forms of fibronectin mRNA produced by two different kinds of cells is an example of ____________.

Accepted Answer

A)  transcriptional control 
B)  post-transcriptional control 
C)  transport control 
D)  translational control 
E)  post-translational control 
A)  transcriptional control 
B)  post-transcriptional control 
C)  transport control 
D)  translational control 
E)  post-translational control

Question 17

The rate at which mRNA is processed by ribosomes is an example of _______________________.

Accepted Answer

A)  transcriptional control 
B)  transcript processing control 
C)  post-translational modification 
D)  translational control 
E)  RNA transport localization 
A)  transcriptional control 
B)  transcript processing control 
C)  post-translational modification 
D)  translational control 
E)  RNA transport localization

Question 18

Explain why grandsons of boys who survived a famine lived longer than grandsons of boys who did not experience a famine?

Accepted Answer

There are many elements to consider in t

Question 19

In eukaryotic DNA methylation,methyl groups are usually added to which molecule?

Accepted Answer

A)  Guanine 
B)  Thymine 
C)  Adenine 
D)  Cytosine 
E)  Deoxyribose 
A)  Guanine 
B)  Thymine 
C)  Adenine 
D)  Cytosine 
E)  Deoxyribose

Question 20

Which of the following statements is NOT correct in the context of epigenetics?

Accepted Answer

A)  Methylations acquired during an individual's lifetime are passed to future offspring. 
B)  Chromosomes of rats resistant to vinclozolin had altered methylation patterns in dozens of different regions. 
C)  In humans, methylation patterns in hundreds of chromosomal regions change after exposure to lead. 
D)  DNA methylations accumulate throughout an individual's lifetime. 
E)  Epigenetic modifications are considered to be an evolutionary mechanism. 
A)  Methylations acquired during an individual's lifetime are passed to future offspring. 
B)  Chromosomes of rats resistant to vinclozolin had altered methylation patterns in dozens of different regions. 
C)  In humans, methylation patterns in hundreds of chromosomal regions change after exposure to lead. 
D)  DNA methylations accumulate throughout an individual's lifetime. 
E)  Epigenetic modifications are considered to be an evolutionary mechanism.

Exam 10: Control of Gene Expression

In plants,the average expression of genes involved in cold tolerance is _________.

Cell differentiation can be defined as ___________________.

Classification. Choose the proper item below for the following statements. -Used in allosteric regulation of the lac operon

Why is SRY considered to be a master gene?

Transcription factors bind directly to ___________________.

The position of a cell within an embryo during embryonic development determines ________________.

Repressors ________________.

Transcription factors include ______________.

Which of the following accounts for the negative control of operons?

On its own,the product of the C group gene alone in Arabidopsis thaliana triggers ____________________.

Choose the one most appropriate answer for each. -Dosage compensation

Classification. Choose the proper item below for the following statements. -This contains regulator,promoter,and operator regions

The correspondence between homeotic genes of distantly related animals provides evidence of ________________.

Which statement is false concerning X chromosome inactivation?

Choose the one most appropriate answer for each. -Homeotic genes

The two different forms of fibronectin mRNA produced by two different kinds of cells is an example of ____________.

The rate at which mRNA is processed by ribosomes is an example of _______________________.

Explain why grandsons of boys who survived a famine lived longer than grandsons of boys who did not experience a famine?

In eukaryotic DNA methylation,methyl groups are usually added to which molecule?

Which of the following statements is NOT correct in the context of epigenetics?

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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