Antigenic stimulation of a particular b cell that results in the production of a large number of plasma and memory cells, all capable of responding to that antigen, is referred to as

How either some or all of the organisms in this activity are related to one another based

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.