Question 1

What is a complex community of prokaryotes?

Accepted Answer

A)  quorum 
B)  colony 
C)  satellite 
D)  leader colony 
E)  biofilm 
A)  quorum 
B)  colony 
C)  satellite 
D)  leader colony 
E)  biofilm

Question 2

Attenuation of the trp mRNA occurs because translation stalls while awaiting the formation of more _______________.

Accepted Answer

The answer of Attenuation of the trp mRNA occurs because...

Question 3

What is the binding unit for the methionine repressor?

Accepted Answer

A)  a pair of β strands 
B)  helix-turn-helix motif 
C)  zinc finger motif 
D)  a region with no discernable secondary structure 
E)  a pair of β strands and zinc finger motif 
A)  a pair of β strands 
B)  helix-turn-helix motif 
C)  zinc finger motif 
D)  a region with no discernable secondary structure 
E)  a pair of β strands and zinc finger motif

Question 4

How does the inducer affect lac operon regulation?

Accepted Answer

The repressor is normally bound to the D

Question 5

In which pathway is the viral genome incorporated into the bacterial DNA?

Accepted Answer

A)  attenuation 
B)  lysogenic 
C)  lytic 
D)  trp operon 
E)  None of the answers is correct. 
A)  attenuation 
B)  lysogenic 
C)  lytic 
D)  trp operon 
E)  None of the answers is correct.

Question 6

The λ repressor protein blocks transcription of ____________________encoded by the virus.

Accepted Answer

The answer of The λ repressor protein blocks transcription of...

Question 7

How does the lac repressor find its binding site on DNA?

Accepted Answer

The lac repressor bi

Question 8

What compounds are released by one prokaryote to communicate with others in the community?

Accepted Answer

A)  quorum sensors 
B)  autoinducers 
C)  biofilms 
D)  attenuators 
E)  None of the answers is correct. 
A)  quorum sensors 
B)  autoinducers 
C)  biofilms 
D)  attenuators 
E)  None of the answers is correct.

Question 9

Explain the difference between constitutive and regulated expression.

Accepted Answer

Genes that are expressed all the time ar

Question 10

The twofold axis of symmetry of the lac repressor matches the symmetry of the ____________.

Accepted Answer

DNA or inv

Exam 31: The Control of Gene Expression in Prokaryotes

What is a complex community of prokaryotes?

Attenuation of the trp mRNA occurs because translation stalls while awaiting the formation of more _______________.

What is the binding unit for the methionine repressor?

How does the inducer affect lac operon regulation?

In which pathway is the viral genome incorporated into the bacterial DNA?

The λ repressor protein blocks transcription of ____________________encoded by the virus.

How does the lac repressor find its binding site on DNA?

What compounds are released by one prokaryote to communicate with others in the community?

Explain the difference between constitutive and regulated expression.

The twofold axis of symmetry of the lac repressor matches the symmetry of the ____________.

Biochemistry: an Evolving Science

Protein Composition and Structure

Exploring Proteins and Proteomes

DNA, RNA, and the Flow of Genetic Information

Exploring Genes and Genomes

Exploring Evolution and Bioinformatics

Hemoglobin: a Portrait of a Protein in Action

Enzymes: Basic Concepts and Kinetics

Oxidative Phosphorylation

Catalytic Strategies

Regulatory Strategies

Carbohydrates

Lipids and Cell Membranes

Membrane Channels and Pumps

Signal-Transduction Pathways

Metabolism: Basic Concepts and Design

Glycolysis and Gluconeogenesis

The Citric Acid Cycle

The Light Reactions of Photosynthesis

The Calvin Cycle and the Pentose Phosphate Pathway

Glycogen Metabolism

Fatty Acid Metabolism

Protein Turnover and Amino Acid Catabolism

The Biosynthesis of Amino Acids

Nucleotide Biosynthesis

Biosynthesis of Membrane Lipids and Steroids

The Integration of Metabolism

DNA Replication, Repair, and Recombination

Rna Synthesis and Processing

Protein Synthesis

The Control of Gene Expression in Eukaryotes

Sensory Systems

The Immune System

Molecular Motors

Drug Development

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