Zoology - Human Health and Diseases Question with Solution | TestHub
Read the following statements about acquired immunity. Which of the following statements are correct?
I. Acquired immunity is a non-specific type of immunity.
II. The primary and secondary immune responses are carried out with the help of lymphocytes present in our blood.
III. Each antibody molecule has two small heavy chains and two longer light chains respectively.
IV. Cell-mediated immunity is mediated by T-lymphocytes.
Options:
Answer:
Solution:
I. Acquired immunity is highly pathogen-specific. It has a memory. It produces a primary response on its encounter with the pathogen for the first time which is of low intensity. On subsequent encounter, it produces a secondary response of higher intensity.
III. Each antibody molecule is made up of four polypeptide chains. There are two small light chains and two longer heavy chains respectively.
