The Organisms That Cause Parasitic Infections

Question

The organisms that cause parasitic infections
A)infect only humans.
B)produce resistant spores in soil and water supplies.
C)have a simple life cycle.
D)are protozoa,helminths or arthropods.
E)all of the above.

Accepted Answer

Organisms that cause parasitic infections include protozoa (single-celled organisms like Plasmodium which causes malaria), helminths (multicellular worms like tapeworms or roundworms), and arthropods (insects like lice or fleas). They do not necessarily infect only humans or produce spores in soil and water supplies. Their life cycles can be simple or complex depending on the species.