Home Biology The Living World Mad cow disease in cattle and Cr Jacob disea…
Biology The Living World Single Correct MCQ
Published on: August 20, 2026

Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by_________ .

A
Bacterium
B
Virus
C
Viroid
D
Prion

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The correct answer is:
D

Mad cow disease (Bovine Spongiform Encephalopathy) in cattle and

Creutzfeldt–Jakob disease in humans are caused by prions, which are infectious misfolded proteins.

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