Question

you expose the bacterium staphylococcus aureus to low - levels of the antibiotic methicillin. the surviving bacteria are then exposed to higher concentrations of methicillin and the process repeated until a strain of methicillin - resistant s. aureus (mrsa) is remaining. to test your hypothesis, you perform an experiment by spreading the original strain of s. aureus and the mrsa strain onto agar plates containing methicillin, and only the mrsa survives.
mrsa infections occur in humans (homo sapiens). homo sapiens are in which domain?

archaea

bacteria

eukarya

animalia

protista

Explanation:

All multicellular organisms including humans (Homo sapiens) belong to the domain Eukarya, as their cells contain a nucleus and other membrane-bound organelles. Archaea and Bacteria are prokaryotic domains, while Animalia and Protista are kingdoms within Eukarya, not domains.

Answer:

C. Eukarya