Question

multiple choice question
which are granulocytes with a multi - lobed nucleus that destroy bacteria by means of phagocytosis, intracellular digestion, and secretion of bactericidal chemicals?

monocytes
eosinophils
lymphocytes
neutrophils

Explanation:

To solve this, we analyze each option:

• Monocytes: Are agranulocytes (not granulocytes) and have a single - lobed nucleus (not multi - lobed), so they are not the answer.
• Eosinophils: Are granulocytes, but their main function is related to combating parasitic infections and allergic reactions, not primarily destroying bacteria through the described mechanisms.
• Lymphocytes: Are agranulocytes and are involved in immune responses like antibody production and cell - mediated immunity, not the phagocytic destruction of bacteria as described.
• Neutrophils: Are granulocytes with a multi - lobed nucleus (often 2 - 5 lobes). They are the first responders to bacterial infections and destroy bacteria via phagocytosis, intracellular digestion, and secretion of bactericidal chemicals.

Answer:

D. Neutrophils