Question

AIDS virus has
A. Single strand DNA
B. Double strand DNA
C. Single strand RNA
D. Double strand RNA

Answer 1

Hint: AIDS i.e. Acquired Immune Deficiency Syndrome is a condition characterized by deficiency of the immune system, acquired during the lifetime of an individual. Syndrome means a group of symptoms.

Complete answer:
AIDS is a deadly disease caused by HIV (human immunodeficiency virus). The virus has an envelope of protein coat enclosing the Single stranded RNA genome with reverse transcriptase.
The core is surrounded by a protein coat called p24. Outside this protein coat is a layer of another protein called p17. The outermost envelope consists of a phospholipid bilayer studded with glycoproteins. HIV is a retrovirus which means it can synthesize DNA from RNA using reverse transcriptase. The NA produced by the virus then integrates into the host cell’s DNA. There it can remain dormant or can take over the host cell machinery to produce more viruses.
The virus attacks on cells that have a specific protein called CD4 on their surfaces. CD4 is found in a class of lymphocyte cells called T4 cells. This class includes Helper T-cells which is why HIV destroys the body’s population of Helper T-cells. CD4 receptors are also found on macrophage surfaces and as a result, macrophage also become infected with HIV. Much of the HIV transmission from one individual to another is thought to occur within macrophages passed as part of the body fluids. Macrophages thus act as HIV factories.
Transmission of HIV-infection usually occurs by sexual contact with an infected person. Transfusion of contaminated blood and blood products, from infected mother to her child through placenta, by sharing infected needles, etc.

So the correct answer is AIDS virus has C. Single stranded RNA.

Note: AIDS was first reported in June 1981 as a result of reports from the Los Angeles area to the Centre for Disease control and Prevention of several cases of a very rare type of pneumonia caused by a fungus.