An antimicrobial compound that targets a pathway or structure that is present in a pathogen but not in the host exhibits

selective toxicity

Explanation:

Selective toxicity is one of the desired features of a successful chemotherapeutic agent and refers to the ability of the drug to kill or inhibit the pathogen only while not damaging the host organisms or presenting the minimum damage to the host. A drug with selective toxicity normally targets the cellular processes or structures that are pathogen-specific and are not present in the host organisms. For instance, penicillin inhibits the synthesis of peptidoglycan but does not affect the host cell since the animal cells lack cell walls.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.