If a person eats contaminated meat from a cow that suffered from mad cow disease, how might that per

If a person eats contaminated meat from a cow that suffered from mad cow disease, how might that person acquire the disease?

 

   A. Cow prion RNA strands are replicated in human brain cells.   
 

   B. Cow prion DNA strands are replicated in human nerve cells.   
 

   C. Cow prions convert normal human prions to abnormal forms.   
 

   D. Cow prions replicate in the human stomach.   
 

   E. Cow prions mutate human DNA.   



Sara cultivated avocados and she noticed that some plants had white blotching. She was told that this was caused by a viroid. What is a viroid?

 

   A. A virus-like bacterium.   
 

   B. Small strand of RNA.   
 

   C. A small virus.   
 

   D. A type of prion.   
 

   E. A type of phage.   


Louise was studying mad cow disease that is caused by a prion. What are prions composed of?

 

   A. Bacteria that are obligate parasites.   
 

   B. Encapsulated DNA.   
 

   C. Protein.   
 

   D. Naked strands of RNA.   
 

   E. Lipid.