BIOL216 Exam 3 Review

(−)ssRNA is transcribed into (+)ssRNA using which of the following?

DNA polymerase encoded by the virus

Any virus can infect any host cell.

False

There is a cure for transmissible spongiform encephalopathies.

False

Arthropods typically serve as which mechanism of transmission for viruses?

biological vector

How is kuru transmitted?

eating infected meat through cannibalism

Which method cannot be used to detect a virus in a patient's serum?

hemagglutinin assay

The excision of the viral genome from the host chromosome is known as which of the following?

induction

Which effect does tomato planta macho viroids have on the crop?

loss of chlorophyll

Which unit of length best describes the average size of a virion?

nm

Transmissible spongiform encephalopathies, such as Creutzfeldt-Jakob disease, are caused by which of the following?

prion

In retroviruses, the integrated phage genome is known as which of the following?

prophage

Although there are no current treatments for prion infections, which of the following could be used?

proteases; sulfa drugs

Which of the following is a novel enzyme found in retroviruses?

reverse transcriptase

Chicken pox can reemerge as which disease?

shingles

Viruses can be visualized using which method?

the electron microscope

The Baltimore Classification system describes viruses according to which characteristic?

the viral genome

Which mechanism of horizontal gene transfer relies on the use of viruses?

transduction

An acellular entity composed of a small circular RNA molecule without a capsid and capable of replicating its genome is known as which of the following?

viriod

An acellular entity composed of a small circular RNA molecule without a capsid and is not capable of replicating its genome is known as which of the following?

viriod

Prion diseases cannot be transmitted from one generation to the next.

True

Which scientist first discovered prions?

Stanley Prusiner

A zoonosis can only be transmitted from animals to humans.

True

Which of the following viruses does not cause latent infections?

adenovirus

The protein subunits that surround the nucleic acid of a virus are known as which of the following?

amino acids

Which of the following properly lists (in order) the steps of viral replication?

attachment, penetration, biosynthesis, maturation, lysis