Category: Everyday Science | Last updated: 2026-09-18
What are antibodies?
A) A type of harmful bacteria
B) Proteins produced by the immune system to fight pathogens
C) Red blood cells
D) Types of vitamins
Explanation
Antibodies are Y-shaped proteins produced by white blood cells (B lymphocytes) that identify and neutralize foreign objects like bacteria and viruses. Each antibody is specific to a particular pathogen.