Human Health and Disease

Question 1

Which of the following disease is not sexually transmitted?

Accepted Answer

Tuberculosis. Tuberculosis is caused by Mycobacterium tuberculosis and spreads through the air in droplets from coughing and sneezing. The other three are classic STDs: syphilis from Treponema pallidum, gonorrhoea from Neisseria gonorrhoeae, and genital warts from human papilloma virus.

Answer

Syphilis

Answer

Gonorrhoea

Answer

Genital warts

Question 2

Which of the following are secondary lymphoid organs? Choose the correct answer from the options given below: (a) Bone marrow (b) Tonsils (c) Spleen (d) Thymus.

Accepted Answer

(b) and (c) only. Primary lymphoid organs are where lymphocytes are produced and mature — bone marrow and thymus. Secondary lymphoid organs are where mature lymphocytes meet antigen and proliferate, which is what tonsils and spleen do.

Answer

(a) and (b) only

Answer

(b) and (d) only

Answer

(a) and (d) only

Question 3

Colostrum, secreted by mother during initial days of lactation, is abundant in ________.

Accepted Answer

IgA. Colostrum is rich in IgA, the antibody that protects mucosal surfaces such as the infant's gut lining. IgG is the one that crosses the placenta before birth, providing a different form of natural passive immunity.

Answer

IgG

Answer

IgM

Answer

IgD

Q1.Which of the following disease is not sexually transmitted?

Q2.Which of the following are secondary lymphoid organs? Choose the correct answer from the options given below:

Q3.Colostrum, secreted by mother during initial days of lactation, is abundant in ________.