Question

Antibodies are secreted by:

• A. T-Cells
• B. B-Cells
• C. α-Cells
• D. β-Cells

Answer 1

The Correct Option is B

Antibodies are proteins that play a crucial role in the immune system by identifying and neutralizing pathogens such as bacteria and viruses. They are produced by a specific type of immune cell known as B-cells. When B-cells encounter antigens (foreign substances), they differentiate into plasma cells, which are specialized for producing and secreting large quantities of antibodies. This is an essential function of the adaptive immune response, aiding in the recognition and destruction of pathogens. 

Option	Explanation
T-Cells	T-cells are primarily involved in cell-mediated immunity, not antibody secretion.
B-Cells	B-cells, upon activation, differentiate into plasma cells which secrete antibodies.
α-Cells	α-cells in the pancreas secrete glucagon, not antibodies.
β-Cells	β-cells in the pancreas produce insulin, not antibodies.

Hence, the correct answer is B-Cells.

Answer 2

Antibody Production: The Role of B-Cells 

This question describes the production of antibodies in the adaptive immune system, focusing on the role of B-cells.

Antibody Production:

• Antibodies (also known as immunoglobulins) are specialized proteins produced by the immune system to recognize and neutralize foreign invaders, such as bacteria, viruses, and toxins.

B-Cells: The Antibody Factories:

• B-Cells (B lymphocytes) are a type of white blood cell (leukocyte) responsible for antibody production.
• B-cells are a critical component of the adaptive immune system, which provides long-lasting immunity to specific pathogens.

Antigen Recognition and Antibody Production:

• Antibodies are produced by B-cells in response to the presence of antigens.

This document describes the role of B-cells in antibody production as part of the adaptive immune response to the presence of antigens.

• Antigens are molecules, typically proteins or polysaccharides, that can be recognized by the immune system. They are often found on the surface of pathogens.
• When a B-cell encounters an antigen that its surface receptor can bind to, the B-cell is activated.

Antibody Production:

• Antibodies are produced by B-cells (also known as B lymphocytes).

Antibody Production by B-Cells