University of Nizwa

UNIVERSITY OF NIZWA

COLLEGE OF ARTS AND SCIENCES DEPARTMENT OF BIOLOGICAL SCIENCES & CHEMISTRY

VIROLOGY (BIOL327) MED-TERM EXAM – FALL 2009

STUDENT NAME: STUDENT ID:

QUESTION 1 (10 POINTS): Complete the following sentences with the right word(s):

1) Virus genome is enclosed in a protein coat called …………………… .

2) A virus virion is composed of …………………… and …………………… .

3) Proteins that are components of virions are called …………………… .

4) The Vast majority of symmetry of virus capsids is either …………………… or

…………………… .

5) Many enveloped viruses have a layer of protein between the envelope and

the nucleocapsid called …………………… .

6) The arthropod-transmitted viruses are referred to as …………………… .

7) Viruses that replicate in one or more tissues and organs of their vectors are

called …………………… .

8) Enveloped viruses can enter host cell by either …………………… or

…………………… .

9) Most RNA viruses replicate in ……………………, while most DNA viruses

replicate in …………………… . 10) Genome uncoating can occur at ……………………, ……………………, or

…………………… .

QUESTION 2 (5 POINTS): Discuss the following terms:

1) Permissive cells:

2) Receptor and co-receptor:

3) Occlusion bodies:

4) Vertical transmission: 5) Nonstructural protein