Question

__________ are the most numerous WBC and are primarily involved in ___________.

A) Lymphocytes; acquired immunity

B) Neutrophilis; phagocytosis

C) Neutrophilis; acquired immunity

D) Lymphocytes; phagocytosis

Answer 1

Answer: B) Neutrophils; phagocytosis

Explanation: White blood cells are the cells which protect the body from antigens, infections and diseases. WBC consists of 5 main types’ : neutrophils, eosinophils, basophils, lymphocytes, and monocytes. Out of which,

- Neutrophils are the most abundant ones (around 40-60%). And they are the primary line of defense and it involved in the process called phagocytosis. In this process the bacteria is ingested into the cell and ultimately killed.

- Lymphocytes one the other side are the second abundant white blood cells (around 20%-40%). They create antibodies and involved in acquired immune response (acquired immunity).

Incorrect options:

A) Lymphocytes; acquired immunity: They are the second numerous white blood cells. Hence, this option is knocked out.

C) Neutrophilis; acquired immunity: Acquired immunity is the function of Lymphocytes and not of Neutrophils. Hence ,this option is incorrect.

D) Lymphocytes; phagocytosis: Lymphocytes are not involved in phagocytosis but in acquired immune response. Hence, this option is knocked out.