Filters
Question type

Study Flashcards

Viruses with _____ sense RNA contain the correct message for translation, while viruses with _____ sense RNA must first be converted into a correct message.

Correct Answer

verifed

verified

All of the following are characteristics of viruses except


A) they can be crystallized.
B) they often have a geometric capsid.
C) they have a viscous fluid inside their capsids.
D) they can cause fatal diseases.
E) they can cause mild diseases.

F) A) and E)
G) B) and E)

Correct Answer

verifed

verified

Compare and contrast the steps of viral multiplication cycles in bacteriophages and animal viruses.

Correct Answer

Answered by ExamLex AI

Answered by ExamLex AI

The steps of viral multiplication cycles...

View Answer

Prophages can be activated into viral replication and enter the lytic cycle.

A) True
B) False

Correct Answer

verifed

verified

True

A _____ is the protein shell around the nucleic acid core of a virus.

Correct Answer

verifed

verified

Which of the following will not support viral cultivation?


A) live lab animals
B) embryonated bird eggs
C) primary cell cultures
D) continuous cell cultures
E) blood agar

F) A) and C)
G) D) and E)

Correct Answer

verifed

verified

Viruses belong to which of the following Kingdoms?


A) Protists
B) Fungi
C) Archaea
D) Bacteria
E) None of the choices are correct.

F) A) and C)
G) All of the above

Correct Answer

verifed

verified

When a virus enters a lysogenic phase, it means


A) the virus is integrated into the DNA of the host cell and is latent.
B) the virus is bursting through the host cell membrane.
C) the virus is starting biosynthesis of its nucleic acid.
D) the virus will remain in circulation and not continue infecting its host.
E) the number of viruses in the host is decreasing as the immune system becomes effective.

F) A) and E)
G) All of the above

Correct Answer

verifed

verified

Freshly isolated animal tissue that is placed in a growth medium and allowed to produce a cell monolayer is referred to as a _____ cell culture.

Correct Answer

verifed

verified

Infectious protein particles are called


A) viroids.
B) phages.
C) prions.
D) oncogenic viruses.
E) spikes.

F) A) and E)
G) None of the above

Correct Answer

verifed

verified

Which of the following is not associated with every virus?


A) envelope
B) capsomers
C) capsid
D) nucleic acid
E) genome

F) A) and B)
G) B) and E)

Correct Answer

verifed

verified

Explain what is meant by host range, what governs host range, and what is meant by tissue tropism.

Correct Answer

Answered by ExamLex AI

Answered by ExamLex AI

Host range refers to the range of differ...

View Answer

No cases of variant Creutzfeldt-Jakob syndrome linked to eating infected cows have occurred in the United States.

A) True
B) False

Correct Answer

verifed

verified

Two noncellular agents, smaller than viruses, are the infectious proteins called _____, and the infectious RNA strands called _____.

Correct Answer

verifed

verified

Which of the following is a type of cytopathic effect?


A) inclusions in the nucleus
B) multinucleated giant cells
C) inclusions in the cytoplasm
D) cells round up
E) All of the choices are correct.

F) D) and E)
G) All of the above

Correct Answer

verifed

verified

The correct sequence of events in viral multiplication is


A) penetration, replication, maturation, adsorption, assembly, release.
B) replication, penetration, maturation, assembly, absorption, release.
C) adsorption, penetration, replication, maturation, assembly, release.
D) assembly, maturation, replication, release, penetration, adsorption.
E) adsorption, release, maturation, replication, assembly, penetration.

F) A) and B)
G) A) and C)

Correct Answer

verifed

verified

Helical and icosahedral are terms used to describe the shapes of a virus


A) spike.
B) capsomere.
C) envelope.
D) capsid.
E) core.

F) None of the above
G) B) and E)

Correct Answer

verifed

verified

Which of the following is correct about viruses?


A) cannot be seen with a light microscope
B) are procaryotic
C) contain 70S ribosomes
D) undergo binary fission
E) can be grown on nutrient agar

F) B) and C)
G) A) and C)

Correct Answer

verifed

verified

A

In general, most DNA viruses multiply in the host cell's _____, while most RNA viruses multiply in the host cell's _____.


A) nucleus, cytoplasm
B) cytoplasm, cell membrane
C) cell membrane, cytoplasm
D) cytoplasm, nucleus
E) nucleus, endoplasmic reticulum

F) A) and B)
G) B) and C)

Correct Answer

verifed

verified

A

Viral spikes are inserted into the host cell membrane before budding or exocytosis occurs.

A) True
B) False

Correct Answer

verifed

verified

Showing 1 - 20 of 68

Related Exams

Show Answer