Question

Humans cannot digest food without the aid of small single-celled organisms that live in our digestive tract. These small organisms help humans digest food by breaking down complex food molecules. Which common name is associated with these single-celled organisms that help humans digest food?
A) algae
B) bacteria
C) protozoa
Eliminate
D) virus
13)
Which of these has only prokaryotic cells?

Answer 1

bacterial
protozoa include prokaryotic cells