Biology for IGCSE & O level - Diseases And Immunity (Section 5 - No. 11)
Which of the following is NOT a characteristic of a pathogen?
They cause disease.
They are microorganisms.
They can be transmitted from person to person.
They are always beneficial to the human body.
Explanation
Pathogens cause disease, are microorganisms, and can be transmitted, but are always harmful to the body.
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