Topics: Viruses and Prions Quiz
Infectious naked strands of RNA that affect plants are called ______.
A. viroids
B. virions
C. spikes
D. bacteriophage
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Creutzfeldt-Jacob disease is _______.
A. a spongiform encephalopathy of humans
B. caused by a viroid
C. initiated by an oncogenic virus
D. also called “mad cow disease”