Question

Which of the following is NOT a function of an antibody?

a. to make cytoplasmic membranes more permeable through the stimulation of IL-10
b. to activate complement
c. to stimulate phagocytosis by opsonization
d. to block bacterial adhesion molecules

Answer 1

The correct answer is option a. An antibody does NOT make cytoplasmic membranes more permeable through IL-10 stimulation. Its functions include activating complement, stimulating phagocytosis by opsonization, and blocking bacterial adhesion molecules.

Step-by-step explanation:

An antibody is a protein produced by the immune system to recognize and neutralize foreign substances in the body, known as antigens. Antibodies have various functions to aid in immune response, but the one that is NOT a function of an antibody is to make cytoplasmic membranes more permeable through the stimulation of IL-10. IL-10 is actually an anti-inflammatory cytokine that helps dampen immune responses.

The other options stated are all functions of antibodies:

1. To activate complement: Antibodies can bind to pathogens and activate the complement system, which helps destroy pathogens.
2. To stimulate phagocytosis by opsonization: Antibodies can coat pathogens and make them more recognizable to immune cells, enhancing their engulfment and destruction.
3. To block bacterial adhesion molecules: Antibodies can prevent bacteria from attaching and invading host cells.