Question 1

What are the functions of the different types of RNA molecules?

Accepted Answer

mRNA encodes proteins. rRNA is a compone

Question 2

Which of the following are required for the termination of translation?

Accepted Answer

A)  sRNAs 
B)  degrons 
C)  tolC proteins 
D)  release factors 
E)  ubiquitins 
A)  sRNAs 
B)  degrons 
C)  tolC proteins 
D)  release factors 
E)  ubiquitins

Question 3

The __________ of transcription and translation helps microbes rapidly adjust gene expression to changes in their environment.

Accepted Answer

A)  coupling 
B)  separation 
C)  processes 
D)  slowing 
E)  pausing 
A)  coupling 
B)  separation 
C)  processes 
D)  slowing 
E)  pausing

Question 4

The "housekeeping" sigma factor in E. coli is:

Accepted Answer

A)  sigma-28 
B)  sigma-38 
C)  sigma-54 
D)  sigma-70 
E)  sigma-97 
A)  sigma-28 
B)  sigma-38 
C)  sigma-54 
D)  sigma-70 
E)  sigma-97

Question 5

A __________ RNA is a single RNA molecule that contains information from several contiguous genes.

Accepted Answer

A)  cistronic 
B)  transfer 
C)  polycistronic 
D)  ribosomal 
E)  messenger 
A)  cistronic 
B)  transfer 
C)  polycistronic 
D)  ribosomal 
E)  messenger

Question 6

Explain the process of transcription initiation.

Accepted Answer

RNA polymerase scans DNA for promoters b

Question 7

Where is the Shine-Dalgarno sequence located and what is it responsible for?

Accepted Answer

The Shine-Dalgarno sequence is found in

Question 8

Which of the following uses the proton motive force as its energy source?

Accepted Answer

A)  signal recognition particle 
B)  SecYEG translocon 
C)  SecA ATPase 
D)  twin arginine translocase 
E)  type I protein secretion 
A)  signal recognition particle 
B)  SecYEG translocon 
C)  SecA ATPase 
D)  twin arginine translocase 
E)  type I protein secretion

Question 9

__________ RNA polymerase plus sigma factor together are called __________.

Accepted Answer

A)  Transcription; translation 
B)  Translation; transcription 
C)  Ribosome; rRNA 
D)  Holoenzyme; core 
E)  Core; holoenzyme 
A)  Transcription; translation 
B)  Translation; transcription 
C)  Ribosome; rRNA 
D)  Holoenzyme; core 
E)  Core; holoenzyme

Question 10

During transcription of the __________ genes, normal, unmodified bases are incorporated, but some of these are modified later by specific enzymes.

Accepted Answer

A)  tRNA 
B)  rRNA 
C)  mRNA 
D)  sRNA 
E)  catalytic RNA 
A)  tRNA 
B)  rRNA 
C)  mRNA 
D)  sRNA 
E)  catalytic RNA

Question 11

What is a chimeric RNA pol and how was it used to determine the mechanism of antibiotic resistance in RNA pol?

Accepted Answer

If something is a chimera, it is compose

Question 12

Signal sequences are found:

Accepted Answer

A)  in the 30S ribosomal subunit 
B)  in the 50S ribosomal subunit 
C)  at the N-terminal end of a protein 
D)  at the C-terminal end of a mRNA 
E)  upstream of the promoter 
A)  in the 30S ribosomal subunit 
B)  in the 50S ribosomal subunit 
C)  at the N-terminal end of a protein 
D)  at the C-terminal end of a mRNA 
E)  upstream of the promoter

Question 13

Genes encoding the form of antibiotic resistance involving an efflux transport system are commonly encoded on __________.

Accepted Answer

A)  chromosomes 
B)  plasmids 
C)  bacteriophage 
D)  transposons 
E)  sigma 
A)  chromosomes 
B)  plasmids 
C)  bacteriophage 
D)  transposons 
E)  sigma

Question 14

Which of the following is a ribozyme?

Accepted Answer

A)  Clp protease 
B)  release factor 
C)  trigger factor 
D)  peptidyl transferase 
E)  aminoacyl-tRNA transferase 
A)  Clp protease 
B)  release factor 
C)  trigger factor 
D)  peptidyl transferase 
E)  aminoacyl-tRNA transferase

Question 15

Which of the following can cause transcription to end?

Accepted Answer

A)  stem and loop 
B)  sigma 
C)  stop codon 
D)  rho 
E)  more than one of the above 
A)  stem and loop 
B)  sigma 
C)  stop codon 
D)  rho 
E)  more than one of the above

Question 16

Rho functions in:

Accepted Answer

A)  protein degradation 
B)  protein secretion 
C)  initiation of translation 
D)  termination of transcription 
E)  release of ribosomes from the mRNA 
A)  protein degradation 
B)  protein secretion 
C)  initiation of translation 
D)  termination of transcription 
E)  release of ribosomes from the mRNA

Question 17

How do sigma factors regulate major physiological responses?

Accepted Answer

One species can make several different s

Question 18

Different __________ can bind simultaneously to the start of each cistron within a polycistronic mRNA.

Accepted Answer

A)  genes 
B)  proteins 
C)  polymerases 
D)  ribosomes 
E)  RNases 
A)  genes 
B)  proteins 
C)  polymerases 
D)  ribosomes 
E)  RNases

Question 19

How does the mRNA referred to as the sense strand compare to the template and nontemplate DNA strand?

Accepted Answer

The sense mRNA is transcribed from the t

Question 20

The general secretion complex known as the SecYEG translocon is found in the:

Accepted Answer

A)  nucleus 
B)  inner membrane 
C)  cell wall 
D)  periplasmic space 
E)  outer membrane 
A)  nucleus 
B)  inner membrane 
C)  cell wall 
D)  periplasmic space 
E)  outer membrane

Exam 8: Transcription, Translation, and Bioinformatics

What are the functions of the different types of RNA molecules?

Which of the following are required for the termination of translation?

The __________ of transcription and translation helps microbes rapidly adjust gene expression to changes in their environment.

The "housekeeping" sigma factor in E. coli is:

A __________ RNA is a single RNA molecule that contains information from several contiguous genes.

Explain the process of transcription initiation.

Where is the Shine-Dalgarno sequence located and what is it responsible for?

Which of the following uses the proton motive force as its energy source?

__________ RNA polymerase plus sigma factor together are called __________.

During transcription of the __________ genes, normal, unmodified bases are incorporated, but some of these are modified later by specific enzymes.

What is a chimeric RNA pol and how was it used to determine the mechanism of antibiotic resistance in RNA pol?

Signal sequences are found:

Genes encoding the form of antibiotic resistance involving an efflux transport system are commonly encoded on __________.

Which of the following is a ribozyme?

Which of the following can cause transcription to end?

Rho functions in:

How do sigma factors regulate major physiological responses?

Different __________ can bind simultaneously to the start of each cistron within a polycistronic mRNA.

How does the mRNA referred to as the sense strand compare to the template and nontemplate DNA strand?

The general secretion complex known as the SecYEG translocon is found in the:

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Virus Structure and Function

Genomes and Chromosomes

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Molecular Techniques and Biotechnology

Energetics and Catabolism

Respiration, Lithotrophy, and Photolysis

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes and the Global Environment

Human Microbiota and Nonspecific Host Defenses

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Chemotherapy

Clinical Microbiology and Epidemiology

Filters

RNA polymerase plus sigma factor together are called .