Sample Questions Virology and Mycology !

1 of 4

Choose the best answer – correct answers are in bold

1. Viruses are capable of infecting
a. bacteria
b. humans
c. plants
d. insects
e. all of the above
2. Most viruses can have the following components
a. either RNA or DNA core
b. a protein shell
c. a capsid
d. a and b
e. All of the above
3. Common recurrent disease produced by herpes virus type 1 is
a. neonatal
b. cold sores
c. eczema herpeticum
d. genital
e. encephalitis
4. Varicella and zoster viruses are
a. both cause by the same virus
b. varicella is acute primary disease
c. zoster is the response of the host to reactivation of the virus
d. varicella is a mild, highly infectious disease in children
e. all of the above
5. Concerning the pathogenesis of influenza
a. the virus enters the host in airborne droplets
b. pneumonia is associated with secondary bacterial invaders
c. necrosis of the upper respiratory tract is common
d. viremia is not present in the nasopharynx before the onset of the symptoms
e. a and b
6. Antigenic variation is most extensive in
a. smallpox virus
b. influenza
c. herpes virus
d. measles
e. mumps
Sample Questions Virology and Mycology ! 2 of 4

7. If an adult patient has fever, sore throat, and lymphadenopathy accompanied by

lymphocytosis with atypical cells the diagnosis most likely is
a. measles
b. infectious mononucleosis
c. infectious hepatitis
d. viral meningitis
e. herpes infection
8. The incubation period of viral hepatitis type A is
a. 360 to 900 days
b. 15 to 45 days
c. 5 to 10 days
d. 3 to 5 days
e. 1 to 3 days
9. The incubation period of influenza ordinarily is
a. 1 to 2 days
b. 10 to 15 days
c. 14 to 20 days
d. 20 to 30 days
e. 40 to 60 days
10. The measles virus
a. spreads by respiratory droplets
b. elutes spontaneously from agglutinated cells
c. is highly contagious for only humans
d. contains neuraminidase molecules
e. has many antigenic types
11. Delta hepatitis
a. it is caused by hepatitis D virus
b. it is caused by a small single stranded RNA virus
c. the virus requires co-infection with hepatitis B virus
d. it is most prevalent in groups at high risk of hepatitis B
e. all of the above
12. Hepatitis C virus
a. Its genome has been shown to contain RNA
b. can be transmitted via blood transfusion
c. prevalence is highest in Egypt at >10% of the general population.
d. currently no vaccine is available
e. all of the above
13. Best source of specimens for isolation of
a. varicella-zoster is vesicle fluid of lesions
b. influenza is feces
c. HIV is nasopharyngeal washings
d. hepatitis A is cerebrospinal fluid
e. all of the above
Sample Questions Virology and Mycology ! 3 of 4

14. Incubation period of

a. Mumps is three days
b. Viral hepatitis type B is two days
c. Influenza is 60 to 90 days
d. Measles is 90 to 200 days
e. Viral hepatitis type C is 40 to 120 days

15. Which of the following properties describes the nature of viruses?

a. They multiply inside and outside cells
b. They are parasites at the genetic level
c. They are not dependent on the host cells’ protein synthesizing apparatus
d. They are not dependent of the host cells’ energy-yielding apparatus
e. a, c and d
16. Pertaining to the measles virus,
a. The strains appear to belong to many antigenic types
b. It is not very contagious in monkeys
c. It agglutinates all RBCs
d. PCR of virus can be done on specimens from urine or respiratory secretions
e. all of the above
17. Which of the following describe cytomegalovirus?
a. It is a member of the herpes viruses
b. It is known to be the most common cause of congenital viral infection
c. It is seen in post-bone marrow transplant patients
d. transmission from mother to child can be in-utero, perinatally or through breast
feeding
e. all of above
18. Candida albicans is noteworthy as the etiologic agent of
a. Valley fever
b. Desert fever
c. Desert rheumatism
d. Thrush
e. San Joaquin fever
19. Ringworm of the arms, legs and torso is also known as
a. Tinea cruris
b. Tinea pedis
c. Tinea capitis
d. Tinea unguium
e. Tina corporis
Sample Questions Virology and Mycology ! 4 of 4

20. If the mother has had measles, her infant will be immune to the disease for the first
a. six months
b. one year
c. two years
d. 3 to 4 years
e. five years
21. The mode of transmission of viral hepatitis type A is
a. predominantly fecal-oral
b. predominantly parenteral
c. by the bite of an insect vector
d. by contact with an infected animal
e. all of the above
22. Fetal infection with rubella in the first trimester of pregnancy
a. is most critical
b. causes more than 80% fetal death leading to spontaneous miscarriage
c. causes defects in 4% of births
d. causes defects in 20% of births
e. a and b
23. The majority of human fungal pathogens belong to the class
a. phycomycetes
b. ascomycetes
c. basidiomycetes
d. deuteromycetes
e. a and b
24. Enteroviruses
a. transmitted by fecal oral route.
b. viruses can be detected in stool, throat swab by culture or PCR.
c. other than for polioviruses, there are no vaccines.
d. infections have a seasonal prevalence during the summer months.
e. all of above
25. Roseola infantum (exanthem subitum)
a. it is a bacterial disease of school-age children.
b. fever is usually absent.
c. there is a specific vaccine.
d. theres is a macular rash.
e. it has a slow onset.