Science · Human Diseases
Diphtheria, a serious infectious disease, is primarily caused by which type of pathogen?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A virus that infects the epithelial cells of the digestive tract
- 2A fungus that spreads rapidly through contaminated food and organic matter
- 3A bacterium that colonizes the respiratory tract and produces a dangerous exotoxin✓
- 4A protozoan that multiplies within red blood cells in the bloodstream
Correct answer
A bacterium that colonizes the respiratory tract and produces a dangerous exotoxin
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