What is the role of antigens in the body's defence against disease? (A) They bind to invading pathogens - HSC - SSCE Biology - Question 9 - 2008 - Paper 1

1. (A) They bind to invading pathogens: This statement is not entirely accurate as it is antibodies that bind to pathogens, not antigens specifically.

2. (B) They trigger the immune response: This option is correct as antigens are key in initiating and regulating the immune response.

3. (C) They inactivate invading antibodies: This is incorrect; antigens do not inactivate antibodies.

4. (D) They suppress the inflammation response: This statement is also incorrect; antigens are involved in promoting the immune response rather than suppressing it.

After analyzing the options, the correct answer is (B): They trigger the immune response.