Amanda A
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Amanda A
Created by Amanda A about 6 years ago
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Virology

Question 1 of 23

1

Which of the following does a virus lack? Select all that apply.

Select one or more of the following:

  • ribosomes

  • metabolic processes

  • nucleic acid

  • glycoprotein

Explanation

Question 2 of 23

1

The envelope of a virus is derived from the host’s

Select one of the following:

  • nucleic acids

  • membrane structures

  • cytoplasm

  • genome

Explanation

Question 3 of 23

1

What is another name for a nonenveloped virus?

Select one of the following:

  • enveloped virus

  • provirus

  • naked virus

  • latent virus

Explanation

Question 4 of 23

1

Scientists have identified viruses that are able to infect fungal cells.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 23

1

Which of the following leads to the destruction of the host cells?

Select one of the following:

  • lysogenic cycle

  • lytic cycle

  • prophage

  • temperate phage

Explanation

Question 6 of 23

1

A virus obtains its envelope during which of the following phases?

Select one of the following:

  • attachment

  • penetration

  • assembly

  • release

Explanation

Question 7 of 23

1

Which of the following components is brought into a cell by HIV?

Select one of the following:

  • a DNA-dependent DNA polymerase

  • RNA polymerase

  • ribosome

  • reverse transcriptase

Explanation

Question 8 of 23

1

A positive-strand RNA virus:

Select one of the following:

  • must first be converted to a mRNA before it can be translated.

  • can be used directly to translate viral proteins.

  • will be degraded by host enzymes.

  • is not recognized by host ribosomes.

Explanation

Question 9 of 23

1

What is the name for the transfer of genetic information from one bacterium to another bacterium by a phage?

Select one of the following:

  • transduction

  • penetration

  • excision

  • translation

Explanation

Question 10 of 23

1

Fill the blank space to complete the text.

or lytic viruses, is a phase during a viral growth curve when the virus is not detected.

Explanation

Question 11 of 23

1

Which of these infectious agents do not have nucleic acid?

Select one of the following:

  • virions

  • viruses

  • bacteria

  • prions

Explanation

Question 12 of 23

1

Which of the following is true of prions?

Select one of the following:

  • They can be inactivated by boiling at 100 °C

  • They contain a capsid.

  • They are a rogue form of protein, PrP.

  • They can be reliably inactivated by an autoclave.

Explanation

Question 13 of 23

1

Which of the following statements about virus structure is true?

Select one of the following:

  • All viruses are encased in a viral membrane.

  • The capsomere is made up of small protein subunits called capsids.

  • DNA is the genetic material in all viruses.

  • Glycoproteins help the virus attach to the host cell.

Explanation

Question 14 of 23

1

Which statement is true?

Select one of the following:

  • A virion contains DNA and RNA.

  • Viruses are acellular.

  • Viruses replicate outside of the cell.

  • Most viruses are easily visualized with a light microscope.

Explanation

Question 15 of 23

1

Which is true of DNA viruses?

Select one of the following:

  • They use the host cell’s machinery to produce new copies of their genome.

  • They all have envelopes.

  • They are the only kind of viruses that can cause cancer.

  • They are not important plant pathogens.

Explanation

Question 16 of 23

1

Which of the following is not associated with prions?

Select one of the following:

  • replicating shapes

  • mad cow disease

  • DNA

  • toxic proteins

Explanation

Question 17 of 23

1

Which statement is true of viroids?

Select one of the following:

  • They are single-stranded RNA particles.

  • They reproduce only outside of the cell.

  • They produce proteins.

  • They affect both plants and animals.

Explanation

Question 18 of 23

1

Which is NOT a Baltimore classification of viruses?

Select one of the following:

  • positive-strand DNA

  • negative-strand DNA

  • positive-strand RNA

  • negative-strand RNA

Explanation

Question 19 of 23

1

Group I uses its own or host DNA polymerases for replication.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 23

1

Group I:
Group II:
Group III:
Group IV:
Group V:
Group VI:
Group VII:

Select option below to complete the highlighted text

    Double stranded DNA
    Single stranded DNA
    Double stranded RNA
    Positive single stranded RNA
    Negative single stranded RNA
    Retrovirus
    Double stranded DNA pararetrovirus

Explanation

Question 21 of 23

1

Spiders carry the Bluetongue virus into barns and fields. The virus causes high morbidity and mortality in ruminants. The Bluetongue virus is an orbivirus, which is part of the Reovirus family.

What is the Baltimore classification for Bluetongue virus?

Select one of the following:

  • Group I

  • Group II

  • Group III

  • Group IV

  • Group V

Explanation

Question 22 of 23

1

Spiders carry the Bluetongue virus into barns and fields. The virus causes high morbidity and mortality in ruminants. The Bluetongue virus is an orbivirus, which is part of the Reovirus family.

What type of genome does the Bluetongue virus have?

Select one of the following:

  • Single-stranded DNA

  • Double-stranded DNA

  • Single-stranded RNA

  • Double-stranded RNA

Explanation

Question 23 of 23

1

What’s the difference between a virion and a viroid?

Select one of the following:

  • There’s no difference. The terms are synonymous

  • A viroid is bigger than a virion

  • A viroid only infects plants while a virion only infects animals

  • A viroid only has a capsid and no genetic material

  • A viroid only has RNA and no capsid

Explanation

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