Question 1

Viral replication occurs

Accepted Answer

A) intracellularly. 
B) extracellularly. 
C) both intracellularly and extracellularly. 
D) either intracellularly or extracellularly,depending on the virus involved. 
A) intracellularly. 
B) extracellularly. 
C) both intracellularly and extracellularly. 
D) either intracellularly or extracellularly,depending on the virus involved.

Question 2

Enveloped viral membranes are generally ________ with associated virus-specific ________.

Accepted Answer

A) lipid bilayers / phospholipids 
B) protein bilayers / lipids 
C) lipid bilayers / glycoproteins 
D) glycolipid bilayers / phospholipids 
A) lipid bilayers / phospholipids 
B) protein bilayers / lipids 
C) lipid bilayers / glycoproteins 
D) glycolipid bilayers / phospholipids

Question 3

The growth of viruses in a culture is described as a one-step growth curve,because

Accepted Answer

A) virion numbers show no increase during intracellular replication and can only be counted after the virions burst from the host cell. 
B) there is only one step in the viral life cycle which leads to only one replicative cycle in a culture. 
C) assembly and release actually occur in one step. 
D) the eclipse phase prevents the plating and enumeration of virions although new virions are produced at a steady rate during the eclipse phase. 
A) virion numbers show no increase during intracellular replication and can only be counted after the virions burst from the host cell. 
B) there is only one step in the viral life cycle which leads to only one replicative cycle in a culture. 
C) assembly and release actually occur in one step. 
D) the eclipse phase prevents the plating and enumeration of virions although new virions are produced at a steady rate during the eclipse phase.

Question 4

How does plating efficiency affect the number of plaque-forming units? How is plating efficiency calculated?

Accepted Answer

The issue of plating efficiency is that

Question 5

You are attempting to mutate lambda to affect whether lysis or lysogeny occurs after lambda infection.Which mutation would INCREASE the chances of LYSOGENY over lysis?

Accepted Answer

A) deletion or inactivation of the cI gene 
B) deletion or inactivation of the cro gene 
C) overexpression of the cro gene 
D) deletion of both the cro and cI genes 
A) deletion or inactivation of the cI gene 
B) deletion or inactivation of the cro gene 
C) overexpression of the cro gene 
D) deletion of both the cro and cI genes

Question 6

What are the consequences of a viral infection of an animal cell?

Accepted Answer

A) rapid lysis or latent infections 
B) lysogeny followed by eventual lysis 
C) lysis or lysogeny 
D) Outcomes vary from rapid lysis to persistent infections,latent infections,or cancer. 
A) rapid lysis or latent infections 
B) lysogeny followed by eventual lysis 
C) lysis or lysogeny 
D) Outcomes vary from rapid lysis to persistent infections,latent infections,or cancer.

Viral replication occurs

Enveloped viral membranes are generally with associated virus-specific .

The growth of viruses in a culture is described as a one-step growth curve,because

How does plating efficiency affect the number of plaque-forming units? How is plating efficiency calculated?

You are attempting to mutate lambda to affect whether lysis or lysogeny occurs after lambda infection.Which mutation would INCREASE the chances of LYSOGENY over lysis?

What are the consequences of a viral infection of an animal cell?

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

Filters

Exam 8: Viruses and Virology

Viral replication occurs

Enveloped viral membranes are generally ________ with associated virus-specific ________.

The growth of viruses in a culture is described as a one-step growth curve,because

How does plating efficiency affect the number of plaque-forming units? How is plating efficiency calculated?

You are attempting to mutate lambda to affect whether lysis or lysogeny occurs after lambda infection.Which mutation would INCREASE the chances of LYSOGENY over lysis?

What are the consequences of a viral infection of an animal cell?

Microorganisms and Microbiology

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Biology

Microbial Growth and Control

Microbial Genomics

Metabolic Regulation

Viral Genomes and Diversity

Genetics of Bacteria and Archaea

Genetic Engineering and Biotechnology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Bacteria

Diversity of Bacteria

Diversity of Archaea

Diversity of Eukaryotic Microorganisms

Methods in Microbial Ecology

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology

Epidemiology

Person-To-Person Bacterial and Viral Diseases

Vectorborne and Soilborne Bacterial and Viral Diseases

Water and Food As Vehicles of Bacterial Diseases

Eukaryotic Pathogens: Fungal and Parasitic Diseases

Filters

Enveloped viral membranes are generally with associated virus-specific .