Block 3: Key Facts

Question 1

Which DNA virus replicates outside of the nucleus?

Answer 1

Poxvirus; it has a DNA-dependent RNA polymerase and can replicate without nuclear enzymes

Question 2

What is the function of the hepatitis B DNA polymerase?

Answer 2

Completes partial double-stranded DNA upon viral entry, and later DNA polymerase reverse transcribes viral RNA to DNA for progeny genome synthesis

Question 3

What viruses present with eye infections?

Answer 3

These 4 viruses are associated with conjuctivitis

1. Adenovirus
2. Coxsackie A
3. HSV
4. Varicella zoster

Question 4

Name the 10 viruses affiliated with respiratory tract infections

Answer 4

1. PIV
2. Influenza
3. RSV
4. Measles
5. Rubella
6. Hanta
7. Corona
8. Adeno
9. Mumps
10. Rhino

Question 5

Toxoplams gondii can present like EBV, which causes Mono.

How to differentiate?

Answer 5

Toxoplasma will have a negative heterophile Ab test

Question 6

Clinical manifestations of adenovirus infection include:

Answer 6

Febrile respiratory tract infection (pharyngitis, coryza, pneumonia)

Conjunctivitis

Acute hemorrhagic cystitis

Gastroenteritis

Question 7

Answer 7

Question 8

Adenovirus is also one of the most common causes of conjunctivitis:

Answer 8

H. influenzae

Adenovirus

S. pneumoniae