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Multiple Choice
Some bacteria, viruses, parasites, and fungi are collectively known as:
A
Prokaryotes
B
Commensals
C
Pathogens
D
Antigens
Verified step by step guidance
1
Step 1: Understand the definitions of each term provided in the options.
Step 2: Recall that 'Prokaryotes' refers to organisms without a nucleus, such as bacteria, but does not include viruses, parasites, or fungi.
Step 3: Recognize that 'Commensals' are organisms that live in or on a host without causing harm, so this does not fit the description of harmful agents.
Step 4: Know that 'Antigens' are molecules or molecular structures that can trigger an immune response, not the organisms themselves.
Step 5: Identify that 'Pathogens' are microorganisms, including bacteria, viruses, parasites, and fungi, that cause disease, which matches the description given.