PLEASE HELP I WILL MARK BRAINALIST

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Aprocedure done under controlled conditions to test a hypothesis is an inquiry.

1. isogamy 1 organisms with gametes of the same size and shape 2. anisogamy organisms with gametes of different sizes and shapes 3. oogamy 2 organisms with gametes of the same shape but different sizes 4. gonads gamete-producing organs in lower plants 5. gametangia gamete-producing organs in animals