MCQs

Blood exposure greatly increases risk.

Viral DNA integrates into host chromosomes.

Weak immunity permits unusual infections.

Antiretroviral drugs reduce viral load.

Frequent infections indicate weakened immune defense.

Screening prevents contaminated blood use.

HIV does not replicate in mosquitoes.

HIV contains two copies of ssRNA.

Chronic diarrhea commonly occurs in advanced HIV infection.

Fewer helper T cells weaken defense mechanisms.

HIV attaches mainly to CD4 receptors.

Handshakes and casual contact do not spread HIV.

Antibody tests help identify infection.

HIV does not survive long outside hosts.

Chronic infection often causes weight loss.

Vertical transmission can occur before or after birth.

Blood-contaminated needles can transfer HIV.

HIV relies on host cells for reproduction.

AIDS results from HIV infection.