Which term refers to disease-causing organisms such as viruses, bacteria, or parasites?

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Multiple Choice

Which term refers to disease-causing organisms such as viruses, bacteria, or parasites?

Explanation:
Disease-causing organisms are called pathogens. A pathogen is any organism or agent capable of causing disease in a host, and it includes viruses, bacteria, and parasites (along with other types in some definitions). A toxin is a harmful substance, not an organism, so it isn’t the right term. A virus is a type of pathogen, but the word pathogen covers all the disease-causing organisms listed. Bacteria are also a type of pathogen, but again, the broad term that encompasses viruses, bacteria, and parasites is pathogen.

Disease-causing organisms are called pathogens. A pathogen is any organism or agent capable of causing disease in a host, and it includes viruses, bacteria, and parasites (along with other types in some definitions). A toxin is a harmful substance, not an organism, so it isn’t the right term. A virus is a type of pathogen, but the word pathogen covers all the disease-causing organisms listed. Bacteria are also a type of pathogen, but again, the broad term that encompasses viruses, bacteria, and parasites is pathogen.

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