Question 1

In catabolite repression, what is indicated by high levels of cAMP?

Accepted Answer

A)  low lactose 
B)  low glucose 
C)  high lactose 
D)  high glucose 
A)  low lactose 
B)  low glucose 
C)  high lactose 
D)  high glucose

Question 2

Which element(s) does RNA polymerase II bind to?

Accepted Answer

A)  transcription factors bound to the promoter 
B)  free-floating transcription factors 
C)  TATA box 
D)  promoter sequence 
A)  transcription factors bound to the promoter 
B)  free-floating transcription factors 
C)  TATA box 
D)  promoter sequence

Question 3

Identify each labelled part of this illustration of eukaryotic DNA.  
-RNA polymerase

Accepted Answer

The answer of Identify each labelled part of this illustration...

Question 4

Identify each labelled part on the illustration of the Lac operon.  
-promoter

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 5

RNAi is a key regulator of transcription.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is a characteristic of normal cells relative to cancer cells?

Accepted Answer

A)  dedifferentiation 
B)  differentiation 
C)  uncontrolled growth 
D)  lack of tumour suppressor proteins 
A)  dedifferentiation 
B)  differentiation 
C)  uncontrolled growth 
D)  lack of tumour suppressor proteins

Question 7

Suppose that you observe a mutant E. coli in which CAP is always inactive. In the presence of lactose and low levels of glucose, what would you expect the gene expression from this mutant's lac operon to be?

Accepted Answer

A)  inactive 
B)  normal 
C)  greatly reduced 
D)  overactive 
A)  inactive 
B)  normal 
C)  greatly reduced 
D)  overactive

Question 8

Eukaryotic genes consist of protein-coding sequences and adjacent regulatory sequences.

Accepted Answer

A) True 
 B)False

Question 9

A direct correlation exists between the level of translation and the length of a poly(A) tail.

Accepted Answer

A) True 
 B)False

Question 10

Identify each labelled part of this illustration of eukaryotic DNA.  
-coactivator multiprotein complex

Accepted Answer

The answer of Identify each labelled part of this illustration...

Question 11

Identify each labelled part on the illustration of the Lac operon.  
-lacZ

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 12

Match each term with its definition.
-repressor

Accepted Answer

A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter 
A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter

Question 13

The DNA that encodes siRNA is NOT normally found in the nucleus.

Accepted Answer

A) True 
 B)False

Question 14

What is the main function of drones in a beehive?

Accepted Answer

A)  to mate with queens 
B)  to mate with workers 
C)  to bring food 
D)  to take care of young 
A)  to mate with queens 
B)  to mate with workers 
C)  to bring food 
D)  to take care of young

Question 15

Identify each labelled part on the illustration of the Lac operon.  
-transcription initiation site

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 16

Why do prokaryotic organisms tend to undergo rapid and reversible alterations in their genes?

Accepted Answer

A)  They are not as advanced. 
B)  They are small. 
C)  They are simple. 
D)  They grow quickly. 
A)  They are not as advanced. 
B)  They are small. 
C)  They are simple. 
D)  They grow quickly.

Question 17

Identify each labelled part on the illustration of the Lac operon.  
-lacI

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 18

What is the role of a tumour suppressor protein in a cell?

Accepted Answer

A)  to promote cell division of abnormal cells 
B)  to slow or halt cell division in abnormal cells 
C)  to trigger DNA replication in preparation for cell division 
D)  to promote cell division of healthy cells 
A)  to promote cell division of abnormal cells 
B)  to slow or halt cell division in abnormal cells 
C)  to trigger DNA replication in preparation for cell division 
D)  to promote cell division of healthy cells

Question 19

Identify each labelled part on the illustration of the Lac operon.  
-lacA

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 20

Which of the following proteins binds to the operator in the operon model?

Accepted Answer

A)  DNA polymerase 
B)  RNA polymerase 
C)  a regulatory protein 
D)  lactose 
A)  DNA polymerase 
B)  RNA polymerase 
C)  a regulatory protein 
D)  lactose

Exam 13: Regulation of Gene Expression

In catabolite repression, what is indicated by high levels of cAMP?

Which element(s) does RNA polymerase II bind to?

Identify each labelled part of this illustration of eukaryotic DNA. -RNA polymerase

Identify each labelled part on the illustration of the Lac operon. -promoter

RNAi is a key regulator of transcription.

Which of the following is a characteristic of normal cells relative to cancer cells?

Suppose that you observe a mutant E. coli in which CAP is always inactive. In the presence of lactose and low levels of glucose, what would you expect the gene expression from this mutant's lac operon to be?

Eukaryotic genes consist of protein-coding sequences and adjacent regulatory sequences.

A direct correlation exists between the level of translation and the length of a poly(A) tail.

Identify each labelled part of this illustration of eukaryotic DNA. -coactivator multiprotein complex

Identify each labelled part on the illustration of the Lac operon. -lacZ

Match each term with its definition. -repressor

The DNA that encodes siRNA is NOT normally found in the nucleus.

What is the main function of drones in a beehive?

Identify each labelled part on the illustration of the Lac operon. -transcription initiation site

Why do prokaryotic organisms tend to undergo rapid and reversible alterations in their genes?

Identify each labelled part on the illustration of the Lac operon. -lacI

What is the role of a tumour suppressor protein in a cell?

Identify each labelled part on the illustration of the Lac operon. -lacA

Which of the following proteins binds to the operator in the operon model?

Light and Life

The Cell: an Overview

Energy and Enzymes

Cell Membranes and Signaling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Dna Technologies

Genomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

Plants

Animals

Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Animal Nutrition

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

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