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Microbiology > Chapter 24/ Introduction to viruses that infect humans: The DNA Viruses > Flashcards

Chapter 24/ Introduction to viruses that infect humans: The DNA Viruses Flashcards

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Biology 101 flashcards
1
Q

What is true about Poxviruses?

  1. Produce eruptive skin pustules (pocks or pox) that leave scars
  2. Largest and most complex animal viruses
  3. Have the largest genome of all viruses
  4. Multiply in cytoplasm in factory areas
  5. All the above
A
  1. All the above
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2
Q

When a herpes infection causes eye infection resulting in Inflammation, sharp pain, conjuntivitis, and gritty feeling in the eye this is known as…

A

Herpetic keratitis
(ocular herpes)

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3
Q

Herpetic whitlows are ____ infections of the _____
1. pox, oral cavity
2. CMV,lymph nodes
3. EBV,skin
4. herpes,fingers

A
  1. herpes,fingers
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4
Q

fever blisters and genital infections are caused by

  1. Herpes simplex 1 and 2 (HSV)
  2. Herpesvirus 3
  3. Herpesvirus 4
  4. Herpesvirus 5
A
  1. Herpes simplex 1 and 2 (HSV)
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5
Q

Most RNA viruses multiply in and are released from the cytoplasm.

TRUE or FALSE

A

TRUE

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6
Q

Which of the following viruses causes chronic persistent infection?
1. hepatitis B
2. smallpox
3. parvovirus
4. varicella - zoster virus

A
  1. hepatitis B
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7
Q

Recurrent infection of Herpes simplex can be triggered by
1. UV radiation
2. gas
3. stress
4. 5 and 1
5. alcohol use and drug use
6. 1 and 3

A
  1. 1 and 3
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8
Q

______ is an effective treatment for herpes simplex lesions
1. Amantadine
2. Interferon
3. Acyclovir
4. Cortisone

A
  1. Acyclovir
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9
Q

In general, zoonotic viral diseases are _____ in humans

  1. mild and asymptomatic
  2. self -limited
  3. severe and systemic
  4. not contagious
A
  1. severe and systemic
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10
Q

Viruses that remain as a separate stable genetic element are called

A

episomes

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11
Q

fever blisters or cold sores are referred to as____ ______

A

Herpes labialis

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12
Q

Viruses that last longer term and can last anywhere from years to entire life is called

A

Persistant infections

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13
Q

HSV-1 enters _____nerve

A

5th cranial

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14
Q

Which virus is used in smallpox vaccination?
1. variola
2. vaccinia
3. cowpox
4. varicella

A
  1. vaccinia
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15
Q

herpes zoster is also known as

A

shingles

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16
Q

Molluscipoxvirus causes what common skin disease?

A

molluscum contagiosum

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17
Q

Virus is detectable in tissue samples and is still multiplying at a slow rate but symptoms of infection are usually mild or absent. This is labeled as a ____ infection

A

Chronic

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18
Q

When Reactivation of the chicken pox occurs, it is called ____ ____

A

(shingle) orHerpes zoster

19
Q

_____ infections result when the virus enters a dormant phase inside host cells and becomes inactive after a lytic infection.

A

Latent

20
Q

All RNA viruses are single-stranded except for dsRNA ______

A

reoviruses

21
Q

Adenoviruses are the agents of
1. hemorrhagic cystitis
2. keratoconjuntivitis
3. common cold
4. all of these

A
  1. all of these
22
Q

implicated in Kaposi sarcoma
1. Herpesvirus 8
2. Herpesvirus 3
3. Herpesvirus 4
4. Herpesvirus 6 and 7

A
  1. Herpesvirus 8
23
Q

Neonatal herpes simplex is usually acquired through
1. contaminated mothers hands
2. other babies in the newborn nursery
3. crossing the placenta
4. an infected birth canal

A
  1. an infected birth canal
24
Q

Most DNA viruses are budded off the nucleus
TRUE or FALSE

A

TRUE

25
Q

HSV-2 enters ______ spinal nerve trunk ganglia

A

lumbosacral

26
Q

Which of the following viruses can be oncogenic in humans
1. papillomavirus
2. Epstein-Barr virus
3. adenovirus
4. both a and b

A
  1. both a and b
27
Q

Epstein-Barr virus (EBV), associated
with infection of the lymphoid tissue

  1. Herpes simplex 1 and 2 (HSV)
  2. Herpesvirus 3
  3. Herpesvirus 4
  4. Herpesvirus 5
A
  1. Herpesvirus 4
28
Q

Which of the following is NOT caused by a poxvirus?
A. Molluscum contagiosum
B. Smallpox
C. Cowpox
D. Chickenpox

A

D. Chickenpox

29
Q

Small pox can be highly virulent, cause toxemia, shock, and intravascular coagulation. This would be called ____ _____

A

Variola major

30
Q

What herpesvirus is most commonly associated with a dangerous fetal infection
1. herpes simplex
2. herpes zoster
3. EBV
4. CMV

A
  1. CMV
31
Q

Varicella and zoster is caused by
1. the same virus
2. two different strains of VZV
3. herpes simplex and herpes zoster
4. CMV and VZV

A
  1. the same virus
32
Q

cytomegalovirus (CMV), infects the
salivary glands and other viscera

  1. Herpes simplex 1 and 2 (HSV)
  2. Herpesvirus 3
  3. Herpesvirus 4
  4. Herpesvirus 5
A
  1. Herpesvirus 5
33
Q

Herpes simplex 1 usually causes _____, and herpes simplex2 usually causes _____

A. cold sores, genital herpes
B. fever blisters, cold sores
C. canker sores, fever blisters
D. shingles, stomatitis

A

A. cold sores, genital herpes

34
Q

A syndrome characterized by fever and lymphocytosis, which somewhat similar to Epstein - Barr virus is called

A

Cytomegalovirus mononucleosis

35
Q

All DNA viruses are double-stranded except for
______which have ssDNA

A

parvoviruses
single stranded

36
Q

A common sign of hepatitis is
1. liver cancer
2. jaundice
3. anemia
4. bloodshot eyes

A
  1. jaundice
37
Q

Parvoviruses are unique because they contain
1. a double-stranded RNA genome
2. reverse transciptase
3. a single - stranded DNA genome
4. an envelope without spikes

A
  1. a single - stranded DNA genome
38
Q

Animal viruses are categorized according to what 3 factors?

A

-nucleic acid (DNA/RNA)
-capsid
- presence or absence of envelope

39
Q

Benign epithelial growths on the skin of fingers are called
1. polyomas
2. verrucas
3. whitlows
4. pox

A
  1. verrucas
40
Q

Molluscipoxvirus is transmitted by ____ ____ and ____

A

direct contact and fomites

41
Q

A virus associated with chronic liver infection and cancer is
1. hepatitis C
2. hepatitis B
3. hepatitis A
4. both a and b

A
  1. both a and b
42
Q

Two types of persistence viral infections are….

A

Chronic viral infections and latent viral infections

43
Q

varicella-zoster virus (VZV), chickenpox
and shingles
1. Herpes simplex 1 and 2 (HSV)
2. Herpesvirus 3
3. Herpesvirus 4
4. Herpesvirus 5

A
  1. Herpesvirus 3

Microbiology (11 decks)

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