To start an experiment,you do an infection by putting 0.5 ml of a virus stock that has a titer of 6 x 107 pfu/ml onto a plate of animal cells that contains 5 x 106 cells.What is the multiplicity of infection for this experiment?

A) 12 B) 6 C) 5 D) 3 E) 1 A) 12 B) 6 C) 5 D) 3 E) 1

Exam 1: Introduction to Virology 2

Viruses are not the only obligatory intracellular parasites.Describe how the replication of viruses is different than cellular organisms that replicate inside of cells,like chlamydiae and rickettsiae.

(Essay)

4.8/5

(31)

Question 21

Viruses play a major role in the ecology of the ocean by doing which of the following?

(Multiple Choice)

4.9/5

(37)

Question 22

If you wanted to show that an infectious agent is a virus,what experiment could you do?

(Multiple Choice)

4.9/5

(38)

Question 23

During a single growth cycle experiment,the titer of extracellular and intracellular virus drops in the first hour.What explains this observation?

(Multiple Choice)

4.9/5

(32)

Question 24

When doing a plaque assay with human or animal cells,a layer of nutrient media mixed with agar is put on top of the cells after they have been infected with the diluted virus.What is the major purpose of this agar layer?

(Multiple Choice)

4.7/5

(30)

Question 25

Which of the following is an enzyme that most RNA viruses encode in their genome?

(Multiple Choice)

4.9/5

(40)

Question 26

To start an experiment,you do an infection by putting 0.5 ml of a virus stock that has a titer of 6 x 10⁷ pfu/ml onto a plate of animal cells that contains 5 x 10⁶ cells.What is the multiplicity of infection for this experiment?

(Multiple Choice)

4.8/5

(30)

Question 27

Showing 21 - 27 of 27

Exam 1: Introduction to Virology 2

Viruses are not the only obligatory intracellular parasites.Describe how the replication of viruses is different than cellular organisms that replicate inside of cells,like chlamydiae and rickettsiae.

Viruses play a major role in the ecology of the ocean by doing which of the following?

If you wanted to show that an infectious agent is a virus,what experiment could you do?

During a single growth cycle experiment,the titer of extracellular and intracellular virus drops in the first hour.What explains this observation?

When doing a plaque assay with human or animal cells,a layer of nutrient media mixed with agar is put on top of the cells after they have been infected with the diluted virus.What is the major purpose of this agar layer?

Which of the following is an enzyme that most RNA viruses encode in their genome?

To start an experiment,you do an infection by putting 0.5 ml of a virus stock that has a titer of 6 x 107 pfu/ml onto a plate of animal cells that contains 5 x 106 cells.What is the multiplicity of infection for this experiment?

Virus Structure and Assembly

Virus Classification: the World of Viruses

Virus Entry

Single-Stranded Rna Bacteriophages

Microviruses

Bacteriophage

Bacteriophage Lambda

Viruses of Archaea

Cucumber Mosaic Virus

Picornaviruses

Flaviviruses

Togaviruses

Coronaviruses

Paramyxoviruses and Rhabdoviruses

Filovirouses

Bunyaviruses

Influenza Viruses

Reoviruses

Parvoviruses

Polyomaviruses

Papillomaviruses

Adenoviruses

Herpesviruses

Baculoviruses

Poxviruses

Viruses of Algae and Mimivirus

Retroviruses

Human Immunodeficiency Virus

Hepadnaviruses

Viroids and Hepatitis Delta Virus

Prions

Intrinsic Cellular Defenses Against Virus Infection

Innate and Adaptive Immune Responses to Virus Infection

Antiviral Vaccines

Antiviral Chemotherapy

Eukaryotic Virus Vectors

Filters

To start an experiment,you do an infection by putting 0.5 ml of a virus stock that has a titer of 6 x 10⁷ pfu/ml onto a plate of animal cells that contains 5 x 10⁶ cells.What is the multiplicity of infection for this experiment?