Q. Which of the following statements is correct with respect to AIDS ?
(a) The causative HIV retroviruses enters helper T-lymphocytes thus reducing their number.
(b) The HIV can be transmitted through eating food together with an infected person.
(c) Drug addicts are least susceptible to HIV infection.
(d) AIDS patients are being fully cured cent percent with proper care and nutrition.
Solution : Correct option : A The causative HIV retroviruses enters helper T-lymphocytes thus reducing their number.
AIDS (acquired immunodeficiency syndrome) is caused by the HIV virus.
T-helper cells play an important role in adaptive immunity. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells. HIV destroys(CD4+ cells) T-helper lymphocyte cells and reducing their number. They’re responsible for keeping you healthy from common diseases and infections. As HIV gradually weakens your natural defences, signs and symptoms will occur. Hence HIV attacks T-helper cells. So, the correct answer is ‘The causative HIV retroviruses enters helper T-lymphocytes thus reducing their number.’.
