Question 1

In terms of sex chromosomes, the cells of female mammals contain ____.

Accepted Answer

A) one X chromosome and one Barr body 
B) one X chromosome 
C) one X chromosome and one Y chromosome 
D) two active X chromosomes 
E) two Barr bodies 
A) one X chromosome and one Barr body 
B) one X chromosome 
C) one X chromosome and one Y chromosome 
D) two active X chromosomes 
E) two Barr bodies A

Question 2

When histones are acetylated, transcription is ____.

Accepted Answer

A) enhanced 
B) slowed 
C) repressed 
D) able to occur 
E) unaffected 
A) enhanced 
B) slowed 
C) repressed 
D) able to occur 
E) unaffected D

Question 3

Homeotic genes encode ____.

Accepted Answer

A) enzymes 
B) translation enhancers only 
C) transcription factors only 
D) both enzymes and translation enhancers 
E) both translation enhancers and transcription factors 
A) enzymes 
B) translation enhancers only 
C) transcription factors only 
D) both enzymes and translation enhancers 
E) both translation enhancers and transcription factors C

Question 4

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once.
-phosphorylation activates a protein

Accepted Answer

A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions 
A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions

Question 5

Match the correct description to the term below. Not all choices will be used.
-When the repressor is inactivated, RNA polymerase can bind to this item and allow transcription to occur.

Accepted Answer

A) operon 
B) operator 
C) promoter 
D) genes 
E) ​inducer 
A) operon 
B) operator 
C) promoter 
D) genes 
E) ​inducer

Question 6

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once.
-proteins move mRNA to a specific location in the cytoplasm

Accepted Answer

A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions 
A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions

Question 7

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once.
-a transcription factor recruits RNA polymerase to a promoter site

Accepted Answer

A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions 
A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions

Question 8

In a prokaryotic operon, the region to which RNA polymerase binds is called ____.

Accepted Answer

A) heterogeneous nuclear DNA 
B) a repressor gene 
C) a promoter sequence 
D) an operator sequence 
E) an enhancer gene 
A) heterogeneous nuclear DNA 
B) a repressor gene 
C) a promoter sequence 
D) an operator sequence 
E) an enhancer gene

Question 9

In prokaryotes, most of the control of gene expression is at the ____ level.

Accepted Answer

A) transcriptional 
B) transcript processing 
C) transport 
D) translational 
E) post-translational 
A) transcriptional 
B) transcript processing 
C) transport 
D) translational 
E) post-translational

Question 10

When only C genes are turned on in flowering plants, ____ form.

Accepted Answer

A) sepals 
B) petals 
C) stamens 
D) carpels 
E) leaves 
A) sepals 
B) petals 
C) stamens 
D) carpels 
E) leaves

Question 11

When a transcription factor binds to a(n) ____, it can block the effect of a silencer of enhancer on a neighboring gene.​

Accepted Answer

A) repressor 
B) insulator 
C) promoter 
D) operator 
E) activator 
A) repressor 
B) insulator 
C) promoter 
D) operator 
E) activator

Question 12

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once.
-microRNA binds to mRNA in the cytoplasm

Accepted Answer

A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions 
A) post-translational modification 
B) translation 
C) RNA processing and transport 
D) transcription 
E) ​DNA-histone interactions

Question 13

Expression of a microRNA complementary in sequence to a gene _____ that gene.

Accepted Answer

A) blocks transcription of 
B) replicates 
C) speeds transcription of 
D) inhibits translation of 
E) methylates the bases in 
A) blocks transcription of 
B) replicates 
C) speeds transcription of 
D) inhibits translation of 
E) methylates the bases in

Question 14

Match the transcriptional gene expression control factor with the most appropriate description.
-These are proteins that bind to DNA and influence transcription of a gene.

Accepted Answer

A) transcription factors 
B) enhancers 
C) repressors 
D) activators 
E) silencers 
A) transcription factors 
B) enhancers 
C) repressors 
D) activators 
E) silencers

Question 15

Match the transcriptional gene expression control factor with the most appropriate description.
-These speed up transcription.

Accepted Answer

A) transcription factors 
B) enhancers 
C) repressors 
D) activators 
E) silencers 
A) transcription factors 
B) enhancers 
C) repressors 
D) activators 
E) silencers

Question 16

The obvious advantage of the lactose operon system is that ____.

Accepted Answer

A) lactose is not needed as energy for bacteria 
B) lactose-metabolizing enzymes are only made when lactose is present 
C) the bacteria will make lactose only in the presence of the proper enzymes 
D) milk is not needed for the adult human diet 
E) glucose can substitute for lactose in the diet of intolerant persons 
A) lactose is not needed as energy for bacteria 
B) lactose-metabolizing enzymes are only made when lactose is present 
C) the bacteria will make lactose only in the presence of the proper enzymes 
D) milk is not needed for the adult human diet 
E) glucose can substitute for lactose in the diet of intolerant persons

Question 17

Match the correct description to the term below. Not all choices will be used.
-A repressor protein can shut down transcription by binding to this item.

Accepted Answer

A) operon 
B) operator 
C) promoter 
D) genes 
E) ​inducer 
A) operon 
B) operator 
C) promoter 
D) genes 
E) ​inducer

Question 18

The XIST gene has been transcribed in ____.

Accepted Answer

A) the active X chromosome 
B) the condensed Barr body 
C) both X chromosomes 
D) the maternal chromosome 
E) the paternal chromosome 
A) the active X chromosome 
B) the condensed Barr body 
C) both X chromosomes 
D) the maternal chromosome 
E) the paternal chromosome

Question 19

Double-stranded RNA can trigger the degradation of complementary mRNA. This method of gene expression control works by ____.

Accepted Answer

A) preventing DNA replication 
B) loosening DNA from histones 
C) enhancing RNA transport 
D) preventing translation 
E) preventing post-translational modification 
A) preventing DNA replication 
B) loosening DNA from histones 
C) enhancing RNA transport 
D) preventing translation 
E) preventing post-translational modification

Question 20

A type of master gene that controls the formation of body parts during development is a ____ gene.

Accepted Answer

A) control 
B) gradient 
C) differentiation 
D) developmental 
E) homeotic 
A) control 
B) gradient 
C) differentiation 
D) developmental 
E) homeotic

Exam 10: Control of Gene Expression

In terms of sex chromosomes, the cells of female mammals contain ____.

When histones are acetylated, transcription is ____.

Homeotic genes encode ____.

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once. -phosphorylation activates a protein

Match the correct description to the term below. Not all choices will be used. -When the repressor is inactivated, RNA polymerase can bind to this item and allow transcription to occur.

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once. -proteins move mRNA to a specific location in the cytoplasm

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once. -a transcription factor recruits RNA polymerase to a promoter site

In a prokaryotic operon, the region to which RNA polymerase binds is called ____.

In prokaryotes, most of the control of gene expression is at the ____ level.

When only C genes are turned on in flowering plants, ____ form.

When a transcription factor binds to a(n) ____, it can block the effect of a silencer of enhancer on a neighboring gene.​

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once. -microRNA binds to mRNA in the cytoplasm

Expression of a microRNA complementary in sequence to a gene _____ that gene.

Match the transcriptional gene expression control factor with the most appropriate description. -These are proteins that bind to DNA and influence transcription of a gene.

Match the transcriptional gene expression control factor with the most appropriate description. -These speed up transcription.

The obvious advantage of the lactose operon system is that ____.

Match the correct description to the term below. Not all choices will be used. -A repressor protein can shut down transcription by binding to this item.

The XIST gene has been transcribed in ____.

Double-stranded RNA can trigger the degradation of complementary mRNA. This method of gene expression control works by ____.

A type of master gene that controls the formation of body parts during development is a ____ gene.

The Science of Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where It Starts-Photosynthesis

Releasing Chemical Energy

DNA Structure and Function

From DNA to Protein

How Cells Reproduce

Meiosis and Sexual Reproduction

Patterns in Inherited Traits

Human Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Lifes Origin and Early Evolution

Viruses, Bacteria, and Archaea

The Protists

Plant Evolution

Fungi

Animals I: Major Invertebrate Groups

Animals Ii: the Chordates

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Reproduction and Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Effects on the Biosphere

Filters

When a transcription factor binds to a(n) ____, it can block the effect of a silencer of enhancer on a neighboring gene.