Which of the following are microscopic, single-celled organisms that may live as parasites or on their own and are able to multiply in humans?
A)Protozoa
B)Helminth
C)Ectoparasites
D)Vectors

Question

Quizplus · Accepted Answer

Protozoa are microscopic, single-celled organisms that can live independently or as parasites. They are capable of multiplying in humans, causing various diseases. Helminths are multicellular parasitic worms, not single-celled. Ectoparasites live on the surface of the host, and vectors are organisms that transmit pathogens, neither are single-celled organisms that multiply within humans.

Which of the Following Are Microscopic, Single-Celled Organisms That May