These Bind,as in a Lock-And-Key Mechanism,to Foreign Proteins

Question

These bind,as in a lock-and-key mechanism,to foreign proteins.
A)antigens
B)antibodies
C)helper T cells
D)cytotoxic T cells
E)effector B cells

Accepted Answer

Antibodies are proteins produced by effector B cells that bind specifically to foreign proteins, such as antigens.

Answer: A
 Antigens are foreign proteins that trigger an immune response, including the production of antibodies by effector B cells, and the activation of helper T cells and cytotoxic T cells.

Answer: C
 Helper T cells are a type of immune cell that recognize foreign proteins (antigens) and help activate other immune cells, including B cells and cytotoxic T cells.

Answer: D
 Cytotoxic T cells are a type of immune cell that kill infected or cancerous cells by recognizing and binding to specific foreign proteins (antigens).

Answer: E
 Effector B cells are a type of immune cell that produce antibodies that bind specifically to foreign proteins (antigens) and help eliminate them.