Question

Which of the following is true regarding white blood cells or leukocytes?

A. Leukocytes are smaller than red blood cells.
B. Leukocytes contain hemoglobin.
C. Leukocytes defend the body against pathogens.
D. The most common leukocyte is the monocyte.

Answer 1

C. Leukocytes defend the body against pathogens is the correct answer. White blood cells are larger than red blood cells, contain a nucleus, and are part of our immune system.

Step-by-step explanation:

The correct answer to the question regarding white blood cells or leukocytes is C. Leukocytes defend the body against pathogens. White blood cells, or leukocytes, are a crucial part of the immune system. Their primary role is to protect the body against invading microorganisms and body cells with mutated DNA, as well as cleaning up debris.

Unlike red blood cells, leukocytes have a nucleus and lack hemoglobin, which means they do not carry oxygen. Instead, they are involved in the immune response and can be classified as granulocytes and agranulocytes, each with different functions. The most common leukocyte is not the monocyte, but the neutrophil.

Answer 2

Answer: C. Leukocytes defend the body against pathogens.

Step-by-step explanation:

Leukocytes or white blood cells are type of blood cells which provide immunity to the body by producing antibodies in the body. These antibodies fight against the disease causing pathogens which invade the host human body for shelter and nourishment.