Bovine spongiform encephalopathy (bse) is a slowly progressive, degenerative, fatal disease affecting the central nervous system of adult cattle. it can be transmitted to humans when the infected flesh of cattle is ingested. what is bse thought to be caused by? a) protozoab) prismsc) prionsd) priori

The correct option is C) Prions

Explanation:

Bovine spongiform encephalopathy (BSE)  or Mad Cow Disease  is a disease which occurs due to transmissible particles known as prions. Prions cannot be considered as living organisms as they do not acquire many of the living characteristics. They are just considered as a protein which gest converted into an activated, toxic form  as soon as they encounter a host cell. This toxic protein harms the central nervous system (CNS) of the cow host and is transmissible.

a- all cells come from pre-existing cells