NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANIMAL TISSUES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Some of the leukocytes have granules in their cytosol that consist of a variety of chemicals involved in defending the body. Which of the following cells typically do NOT contain granules?

A	Basophils
B	Eosinophils
C	Neutrophils
D	Monocytes

Explanation:

Detailed explanation-1: -There are two main groups of leukocytes in the blood. The cells that develop granules in the cytoplasm are called granulocytes and those that do not have granules are called agranulocytes. Neutrophils, eosinophils, and basophils are granulocytes. Monocytes and lymphocytes are agranulocytes.

Detailed explanation-2: -Primary granules contain cationic proteins and defensins that are used to kill bacteria, proteolytic enzymes and cathepsin G to break down (bacterial) proteins, lysozyme to break down bacterial cell walls, and myeloperoxidase (used to generate toxic bacteria-killing substances).

Detailed explanation-3: -A type of immune cell that has granules (small particles) with enzymes that are released during infections, allergic reactions, and asthma. Neutrophils, eosinophils, and basophils are granular leukocytes.

Detailed explanation-4: -Lymphocytes and monocytes are the two types of agranulocytes or nongranular leukocytes. These white blood cells have no obvious granules.

There is 1 question to complete.