Which of the following immunological markers is the MOST reliable indicator for the progression from HIV infection to AIDS?
Presence of HIV antibodies
Viral load above 10,000 copies/mL
CD4+ T-cell count below 200 cells/mm³
Decreased levels of immunoglobulins
Related Questions
HIV, the virus responsible for AIDS, primarily attacks which component of the immune system?
Red blood cells
B cells
Helper T cells (CD4+ T cells)
Platelets
Transmission of HIV occurs by
I. sexual contact with infected person
II. transfusion of contaminated blood
III. sharing infected needless
IV. from infected mother to her baby through placenta
Which of the statements given above are correct?
I and II
I and III
II, III and IV
I, II, III and IV
Genetic material found in Human Immunodeficiency Virus(HIV)is
Double stranded RNA
Single stranded RNA
Double stranded DNA
Single stranded DNA
HIV was reported in 1981 and isolated by
Pasteur
Mantagnier
Robert Hook
Hansen
AIDS is not diagnosed by
Symptoms
HIV antibody tests
CD4 cell count
Viral load tests
At which stage of HIV infection does one usually shows symptoms of AIDS?
When viral DNA is produced by reverse transcriptase
When HIV replicates rapidly in helper T-lymphocytes and damages large number of these
With 15 days of sexual contact with an infected person
When the infecting retrovirus enters host cells
Human immunodeficiency virus causes
Acquired immuno deficiency syndrome
Anthrax
Tuberculosis
Polio
Which of the following statements best describes the role of reverse transcriptase?
It synthesizes DNA from an RNA template.
It synthesizes RNA from a DNA template.
It synthesizes DNA from a DNA template.
It joins fragments of DNA together.
A patient diagnosed with AIDS presents with purple lesions on the skin. Biopsy reveals spindle-shaped tumor cells and angiogenesis. Which opportunistic infection is MOST likely responsible?
Cytomegalovirus retinitis
Kaposi's sarcoma
Tuberculosis
Cryptococcal meningitis
Which of the following is NOT a typical opportunistic infection seen in AIDS patients?
Pneumocystis pneumonia (PCP)
Kaposi's sarcoma
Toxoplasmosis
Influenza
