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BIOL 246 Exam 3 > DNA Viral Families > Flashcards

DNA Viral Families Flashcards

1
Q

What is the only ssDNA family?

A

Parvoviridae

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2
Q

What virus comes from the Papovaviridae family and what does it cause?

A

HPV and cervical cancer, causes warts

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3
Q

What diseases are caused from Poxviridae?

A

Smallpox and Monkeypox

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4
Q

What is the only disease that has been fully eradicated?

A

Smallpox

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5
Q

What is the structure of Poxviridae? (ds or ss, shape, etc.)

A

ds, complex, enveloped

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6
Q

What does Hepadnaviridae cause?

A

Hepatitis B

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7
Q

What is the structure of Herpesviridae? (ds or ss, shape, etc.)

A

ds, icosahedral, enveloped

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8
Q

What are the two most famous diseases from Herpesviridae?

A

HHV-1 (cold sores) and HHV-2 (genital herpes)

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9
Q

What does HHV-3 cause?

A

Chickenpox/Shingles

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10
Q

Why is Herpesviridae unique from other viruses?

A

It’s latent (can’t be cured, will lie dormant in nerve ganglia, and can be reactivated)

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11
Q

Where does HHV-2 lie dormant and how is it reactivated?

A

In the trigeminal nerve ganglia and travels down the nerve a few days before the cold sore appears. Lies dormant in sacral nerve ganglia for genital herpes.

Can be reactivated by stress, immunosuppression, hormonal changes, pregnancy, etc.

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12
Q

Which of the following is a family of viruses that has ds DNA, is enveloped, and causes latent infections?
A. Poxviridae
B. Orthomyxoviridae
C. Coronoviridae
D. Herpesviridae
E. Parvoviridae

A

D

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13
Q

What is the structure of Parvoviridae?

A

ssDNA, icosahedral, naked

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14
Q

What is the structure of Adenoviridae?

A

dsDNA, icosahedral, naked

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15
Q

What is the structure of Papovaviridae?

A

dsDNA, icosahedral, naked

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16
Q

What are the three species from the Papovaviridae family and what do they cause?

A

PA: papilloma = warts
PO: polyoma = tumors
VA: vacuolating = vacuoles in host cell

17
Q

What is the structure of Poxviridae?

A

dsDNA, complex, enveloped, very large

18
Q

What is the structure of Hepadnaviridae?

A

circular dsDNA, icosahedral, enveloped
also has an unusual replication cycle

19
Q

What is the structure of Herpesviridae?

A

dsDNA, icosahedral, enveloped, very large and latent

20
Q

What does Hepadnaviridae cause?

A

hepatitis B virus

21
Q

What does Poxviridae cause?

A

smallpox and cowpox

22
Q

What does Papovaviridae cause?

A

warts, tumors (mostly warts)

23
Q

What does Adenoviridae cause?

A

respiratory diseases

24
Q

What does Parvoviridae cause?

A

gastroenteritis, fetal death, fifth disease

25
Q

Which virus causes 85% of cold sores? How is it spread?

A

HHV-1
Spread via touch and contaminated items such as towels and eating utencils

26
Q

What does HHV-2 cause?

A

Genital herpes -> vesicular rashes

27
Q

How are herpes reactivated?

A
  1. Lies dormant in trigeminal or sacral ganglia
  2. Activated via stress, hormonal changes, etc.
  3. Virus travels down the nerve to the mouth or genitals
  4. Cold sores/herpes develops
28
Q

What does HHV-3 cause?

A

chickenpox and shingles

BIOL 246 Exam 3 (10 decks)

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