Multiple Choice
Which of the following domains contain organisms with prokaryotic cell types?
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26. Prokaryotes
Introduction to Prokaryotes
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Single-celled organisms that cause disease can be found in which domains?
A
Eukarya and Archaea
B
Bacteria and Archaea
C
Bacteria and Eukarya
D
Archaea and Protista
Verified step by step guidance1
Begin by understanding the concept of domains in biology. Domains are the highest taxonomic rank in the classification of life, and there are three domains: Bacteria, Archaea, and Eukarya.
Recognize that single-celled organisms can be found in all three domains. However, not all single-celled organisms cause disease.
Identify which domains contain single-celled organisms known to cause disease. Bacteria are well-known for containing many pathogenic species that can cause diseases in humans, animals, and plants.
Consider the domain Archaea. While Archaea are single-celled organisms, they are not typically associated with human diseases. They often inhabit extreme environments and are less likely to be pathogenic.
Evaluate the domain Eukarya, which includes Protista. Some single-celled eukaryotic organisms, such as certain protists, can cause diseases. However, the question specifically asks for domains, not subgroups within domains.
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