Question

Which of the following produce antibodies directly?

• A. B-lymphocytes
• B. Helper T cells
• C. Nerve cells
• D. T-lymphocytes

Hint:

Remember: \textbf{B} cells make anti\textbf{b}odies. \textbf{T} cells are the commanders; they \textbf{t}ell other cells (like B-cells) what to do.

Answer 1

The Correct Option is A

Step 1: Understand antibody function. Antibodies (immunoglobulins) are proteins used by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Step 2: Identify the antibody-producing cells. The cells responsible for producing antibodies are a type of white blood cell.
(1) B-lymphocytes: When a B-lymphocyte is activated by an antigen, it differentiates into a plasma cell. Plasma cells are veritable antibody factories, producing large quantities of antibodies specific to the antigen that triggered the response. Therefore, B-lymphocytes are the direct producers.
(2) & (4) Helper T cells & T-lymphocytes: T-cells are crucial for the immune response, but they do not produce antibodies themselves. Helper T-cells help activate B-cells and other immune cells, acting as managers of the immune response.
(3) Nerve cells: These are part of the nervous system and have no role in antibody production.
Conclusion: B-lymphocytes (specifically, their differentiated form, plasma cells) are the cells that directly produce antibodies.