Question 1

When considering the biological information flow, transcription is usually thought of as the

Accepted Answer

A)  first step. 
B)  second step. 
C)  third step. 
D)  only step, because everything else flows from transcription. 
A)  first step. 
B)  second step. 
C)  third step. 
D)  only step, because everything else flows from transcription.

Question 2

What occurs when an inducer is added to an environment containing an organism with a metabolic pathway controlled by a repressor?

Accepted Answer

A)  The inducer combines with the repressor and inactivates the pathway. 
B)  The inducer combines with the repressor and activates the pathway. 
C)  The inducer does not combine with, but functions as a chaperone molecule for, the enzyme- substrate complex. 
D)  The inducer combines with the substrate and blocks induction. 
A)  The inducer combines with the repressor and inactivates the pathway. 
B)  The inducer combines with the repressor and activates the pathway. 
C)  The inducer does not combine with, but functions as a chaperone molecule for, the enzyme- substrate complex. 
D)  The inducer combines with the substrate and blocks induction.

Question 3

Enzyme induction occurs

Accepted Answer

A)  when the organism is environmentally stressed. 
B)  when the substrate is depleted. 
C)  when the substrate is present. 
D)  continuously. 
A)  when the organism is environmentally stressed. 
B)  when the substrate is depleted. 
C)  when the substrate is present. 
D)  continuously.

Question 4

Histones are universally present in prokaryotic cells.

Accepted Answer

A) True 
 B)False

Question 5

Compare and contrast chemical, spatial, and temporal gradients as found in bacterial regulatory systems.

Accepted Answer

Bacteria cannot sense spatial gradients

Question 6

The nucleotide triggers of the stringent response are ________and________ .

Accepted Answer

guanosine tetraphosp

Question 7

The most frequent way in which regulatory RNA molecules exert their effects is by

Accepted Answer

A)  binding to a repressor and repressing enzyme transcription. 
B)  signal transduction. 
C)  acting as an inducer that then binds to an activator protein to allow transcription to proceed. 
D)  base pairing with other RNA molecules that have regions of complementary sequence. 
A)  binding to a repressor and repressing enzyme transcription. 
B)  signal transduction. 
C)  acting as an inducer that then binds to an activator protein to allow transcription to proceed. 
D)  base pairing with other RNA molecules that have regions of complementary sequence.

Question 8

The function of a kinase is

Accepted Answer

A)  glycosylation. 
B)  response regulation. 
C)  phosphorylation. 
D)  methylation. 
A)  glycosylation. 
B)  response regulation. 
C)  phosphorylation. 
D)  methylation.

Question 9

When more than one operon is under the control of a single regulatory protein, these operons are collectively called a(n) ________.

Accepted Answer

The answer of When more than one operon is under...

Question 10

Protein binding occurs at the________ site of DNA.

Accepted Answer

A)  histone complex 
B)  primary supercoil 
C)  minor groove 
D)  major groove 
A)  histone complex 
B)  primary supercoil 
C)  minor groove 
D)  major groove

Question 11

Why is it unsurprising that two- component regulatory systems are all but absent in bacteria that live at the expense of a host?

Accepted Answer

The answer of Why is it unsurprising that two- component...

Question 12

When cells experience heat shock, the degradation of sigma factor 32 is inhibited.

Accepted Answer

A) True 
 B)False

Question 13

Regulatory mechanisms that respond to environmental signals by regulating expression of many different genes are called _________.

Accepted Answer

global con

Question 14

The major means of regulation in prokaryotes occurs posttranslationally.

Accepted Answer

A) True 
 B)False

Question 15

Explain the function of cAMP in catabolite repression.

Accepted Answer

Adenylate cyclase synthesizes the regula

Question 16

The lactose operon and the maltose regulon are under the control of global control mechanisms as well as their own specific regulatory systems.

Accepted Answer

A) True 
 B)False

Question 17

Describe the function and the functional components of the maltose regulon system.

Accepted Answer

The textbook shows each component of the

Question 18

Explain the phenomenon known as diauxic growth and why this might be important for survival of a microbe in a community.

Accepted Answer

As an example, Escherichia coli exposed

Question 19

The activity of a protein can be regulated only ________, while the amount of a protein synthesized can be regulated ________or _________.

Accepted Answer

posttranslationally

Question 20

In enzyme induction, a(n)________ represses enzyme production.

Accepted Answer

A)  corepressor 
B)  inducer 
C)  effector 
D)  repressor 
A)  corepressor 
B)  inducer 
C)  effector 
D)  repressor

Exam 8: Regulation of Gene Expression

When considering the biological information flow, transcription is usually thought of as the

What occurs when an inducer is added to an environment containing an organism with a metabolic pathway controlled by a repressor?

Enzyme induction occurs

Histones are universally present in prokaryotic cells.

Compare and contrast chemical, spatial, and temporal gradients as found in bacterial regulatory systems.

The nucleotide triggers of the stringent response are ________and________ .

The most frequent way in which regulatory RNA molecules exert their effects is by

The function of a kinase is

When more than one operon is under the control of a single regulatory protein, these operons are collectively called a(n) ________.

Protein binding occurs at the________ site of DNA.

Why is it unsurprising that two- component regulatory systems are all but absent in bacteria that live at the expense of a host?

When cells experience heat shock, the degradation of sigma factor 32 is inhibited.

Regulatory mechanisms that respond to environmental signals by regulating expression of many different genes are called _________.

The major means of regulation in prokaryotes occurs posttranslationally.

Explain the function of cAMP in catabolite repression.

The lactose operon and the maltose regulon are under the control of global control mechanisms as well as their own specific regulatory systems.

Describe the function and the functional components of the maltose regulon system.

Explain the phenomenon known as diauxic growth and why this might be important for survival of a microbe in a community.

The activity of a protein can be regulated only ________, while the amount of a protein synthesized can be regulated ________or _________.

In enzyme induction, a(n)________ represses enzyme production.

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Cell Structure and Function in Bacteria and Archaea

Nutrition, Culture, and Metabolism of Microorganisms

Microbial Growth

Molecular Biology of Bacteria

Archael and Eukaryotic Molecular Biology

Viruses and Virology

Genetics of Bacteria and Arachaea

Genetic Engineering

Microbial Genomics

Phototrophy, Chemolithotrophy, and Major Biosyntheses

Catabolism of Organic Compounds

Commercial Products and Biotechnology

Microbial Evolution and Systematics

Bacteria: the Proteobacteria

Other Bacteria

Archaea

Eukaryotic Cell Biology and Eukaryotic Microorganisms

Viral Diversity

Methods in Microbial Ecology

Major Microbial Habitats and Diversity

Nutrient Cycles, Biodegradation, and Bioremediation

Microbial Symbioses

Microbial Growth Control

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology and Immunology

Epidemiology

Person-To-Person Microbial Diseases

Vectorborne and Soilborne Microbial Pathogens

Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

Food Preservation and Foodborne Microbial Diseases

Filters

The nucleotide triggers of the stringent response are and .

The activity of a protein can be regulated only , while the amount of a protein synthesized can be regulated or _.