Question

An antibody is

• A. molecule that specifically inactivates an antigen
• B. WBC which invades bacteria
• C. secretion of mammalian RBC
• D. component of blood

Answer 1

The correct option is A

molecule that specifically inactivates an antigen

The correct option is A.

Explanation of correct option:

1. An antibody is a protein molecule produced in the live body that inactivates a specific antigen.
2. An antibody (Ab), also known as an immunoglobulin, is a protein that binds to other proteins.

Explanation of the incorrect option:

Option B:

1. WBCs are a part of the immune system, and when the immune system's effectiveness is reduced, the body releases WBC.
2. These cells are primarily responsible for protecting the body against external particles. Whenever the body is invaded by an illness or a foreign particle

Option C:

1. Antibodies produced by the advanced mammalian folding, secretion, and post-translational apparatus are more similar to those found in the human body than antibodies produced by other expression methods.
2. RBCs in mammals are biconcave, round, and non-nucleated.

Option D:

1. In the composition of blood, there are various cellular formations.
2. Plasma, buffy coat, and erythrocytes separate from a sample of blood when spun in a centrifuge machine.

Final answer: An antibody is molecule that specifically inactivates an antigen.