Question

Select the correct statement with respect to
diseases and immunisation
(a) If due to some reason B-and T-lymphocytes
are damaged, the body will not produce
antibodies against a pathogen
(b) Injection of dead / inactivated pathogens
cause passive immunity
(c) Certain protozoans have been used to mass
produce hepatitis B vaccine
(d) Injection of snake antivenom against snake
bite is an example of active immunisation

Answer 1

Answer:

injection of snake antivenom against snake bite is an example of active immunisation

Answer 2

Answer:

option A

Explanation:

The immune response depends on B and T cells interacting with each other to provide an effective defence. T cells are the coordinators and they stimulate B cells to divide and secrete antibodies into the blood - these antibodies destroy on the antigenic pathogens and the T cells then seek out and kill any of the body's own cells.