VMD-0006
QUESTION
Mad cow disease is caused by?
OPTIONS
(A) Virus
(B) Prion
(C) Bacteria
(D) Protozoa
ANSWER
(B) Prion
EXPLANATION
Mad cow disease, or bovine spongiform encephalopathy, is caused by an abnormal infectious prion protein rather than a conventional microorganism. Viruses, bacteria, and protozoa contain nucleic acids and do not cause this transmissible spongiform encephalopathy.
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