Question 1

Each steroid hormone can bind to its own steroid hormone response unit (SHRU) but NOT to the SHRU associated with other steroid hormones.

Accepted Answer

A) True 
 B)False

Question 2

Identify each labelled part of this illustration of eukaryotic DNA.  
-transcription initiation site

Accepted Answer

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

Question 3

Why can steroid hormones trigger gene expression in a select number of different cells?

Accepted Answer

A)  because only target cells allow the steroid hormone to cross the plasma membrane 
B)  because only the target cells have the correct coactivator 
C)  because only the target cells have a steroid hormone response element encoded in their DNA 
D)  because only the target cells have a nucleus 
A)  because only target cells allow the steroid hormone to cross the plasma membrane 
B)  because only the target cells have the correct coactivator 
C)  because only the target cells have a steroid hormone response element encoded in their DNA 
D)  because only the target cells have a nucleus

Question 4

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

Accepted Answer

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

Question 5

Match each term with its definition.
-silencing

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 6

Acetylation is irreversible.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

Which of the following are the regulatory proteins that play a role in a positive regulatory system that controls the expression of one or more genes?

Accepted Answer

A)  introns 
B)  exons 
C)  activators 
D)  enhancers 
A)  introns 
B)  exons 
C)  activators 
D)  enhancers

Question 10

Which of the following components of an operon is a molecule of DNA?

Accepted Answer

A)  repressor 
B)  lactose 
C)  mRNA 
D)  operator 
A)  repressor 
B)  lactose 
C)  mRNA 
D)  operator

Question 11

Match each term with its definition.
-siRNA

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

Exam 13: Regulation of Gene Expression

Each steroid hormone can bind to its own steroid hormone response unit (SHRU) but NOT to the SHRU associated with other steroid hormones.

Identify each labelled part of this illustration of eukaryotic DNA. -transcription initiation site

Why can steroid hormones trigger gene expression in a select number of different cells?

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

Match each term with its definition. -silencing

Acetylation is irreversible.

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

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

Which of the following are the regulatory proteins that play a role in a positive regulatory system that controls the expression of one or more genes?

Which of the following components of an operon is a molecule of DNA?

Match each term with its definition. -siRNA

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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