Question: In HIV, gp 120, envelope glycoproteins bind specifically to______________?

• 1. CD8 T-cells
• 2. CD4 T-cells
• 3. B – cells
• 4. NK – cells

Question: The small nonparticulate protein leading to enhanced replication of HBV as well as HIV is______________?

• 1. HBc Ag
• 2. HBs Ag
• 3. Hbe Ag
• 4. HBx Ag

Question: patients with organ transplants are most frequently infected with______________?

• 1. Hepatitis A
• 2. Hepatitis B
• 3. CMV
• 4. EBV

Question: EBV is responsible for all except______________?

• 1. Nasopharyngeal carcinoma
• 2. Burkitt’s lymphoma
• 3. Hepatoma
• 4. Infectious mononucleosis

Question: Most common tumor associated with AIDS is______________?

• 1. Carcinoma
• 2. Kaposi’s sarcoma
• 3. Melanoma
• 4. Ewing’s sarcoma

Question: The overall effect of HIV is to gradually impair the immune system by interference with______________?

• 1. Helper T lymphocytes
• 2. Natural killer cells
• 3. Plasma cells
• 4. Macrophages

Question: Hepatitis C virus belongs to which one of the following virus groups ?

• 1. Picorna viruses
• 2. Herpes viruses
• 3. Hepadana viruses
• 4. Flavi viruses

Question: Viruses can be isolated from clinical samples by cultivation in the following except_______________?

• 1. Tissue culture
• 2. Embryonated eggs
• 3. Animals
• 4. Chemically defined media

Question: During the Window period of patient with AIDS_______________?

• 1. ELISA IS – ve
• 2. Western Blot is – ve
• 3. Both are – ve
• 4. PCR is – ve

Question: Plaque test is used routinely in virology lab’s for________________?

• 1. Identification of viral disease
• 2. To separate specific clone of virus
• 3. To maintain certain viral culture
• 4. To prepare vaccines