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?
Answers
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the answer is protozoan
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bacteria is the answer
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