19. Drugs to reduce the risk of rejection are given to organ transplant patients because the donated
organ contains.?

Some of her  assignments would be creation of drugs. she is a medical chemist after all so she'd need to have the necessary knowledge to make medicine which can later be sold in a pharmacy 

Aneutral atom must have the same number of neutrons and protons? no, they must have the same number of protons and electrons

Just dont put scarce