Question

The most abundant antibody found in serum is

• A. IgA
• B. IgG
• C. IgM
• D. IgE
• E.

Hint:

IgG is the most prevalent antibody in the serum and plays a key role in immune defense.

Answer 1

The Correct Option is B

Step 1: Overview of antibodies.
Antibodies, also known as immunoglobulins, are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.
Step 2: IgG is the most abundant antibody.
- IgG is the most abundant antibody in human serum, accounting for about 75-80% of all immunoglobulins.
- IgA is found in mucosal areas, such as the respiratory and gastrointestinal tracts.
- IgM is the first antibody produced during an immune response but is less abundant than IgG.
- IgE is associated with allergic responses and is present in much smaller quantities.
Step 3: Conclusion.
The most abundant antibody found in serum is IgG. Therefore, the correct answer is (2).