Question

Which of the following statements is not correct regarding IgM antibody?

(a) Responsible for the initial activation of B-cells

(b) It is an effective agglutinator of antigen

(c) It makes up 7-10% of our total antibodies

(d) It is the last antibody to be released during the primary response

This question was posed to me in a national level competition.

I want to ask this question from Human Health and Disease in section Human Health and Disease of Biology – Class 12

Answer 1

Right answer is (d) It is the last antibody to be released during the primary response

Easy explanation: IgM is the first antibody which is released during an infection site. IgM is also responsible for the initial activation of B-cells, macrophages and the complement system. It also makes up 7-10% of our total antibodies.