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Which of the following attack/s invaders inside the body?
a) T cells                                              

b) B cells
c) both a and b                    

d) none of these


a

Which of the following kill virus infected cells and activate other cells of immune system to fight the germs?
a) T cells                                              

b) B cells
c) monocytes                       

d) neutrophils

a

Which of the following start making antibodies after activation?
a) T cells                                               

b) B cells
c) monocytes                       

d) neutrophils

b

Antibodies are ……..in nature?
a) proteins                           

b) carbohydrates
c) vitamins                                           

d) fats

a

Explanation:An antibody is a protein component of the immune system that circulates in the blood, recognizes foreign substances like bacteria and viruses, and neutralizes them


Which of the following function/s is/are performed by an antibody?
a) it recognizes the germ    b) it kills the germs
c) it stops the entry of germs            

d) both a and b

d

When we become immune to a disease caused by bacteria and viruses?
a) when body produced T cells
b) when skin stops the entry of pathogens
c) when body produced antibodies
d) all of these

c