The prions believed to cause transmissible spongiform ...

[tiffannnnyyyyyy]

The prions believed to cause transmissible spongiform encephalopathies (TSEs)
 
  a. normally perform important functions in their host animal, and only cause problems if they are transmitted to another species.
  b. differ from normal versions of proteins due to their increased length.
 c. show different forms in different species.
 d. show identical forms in all species.

Question 2

In cell cultures, abnormal prions
 
  a. hijack DNA in order to produce more abnormal prions.
 b. convert normal prions into the abnormal form.
 c. increase calcium influx, which triggers apoptosis.
 d. enhance the expression of death genes that produce caspases.

[jgranad15]

Answer to Question 1

c

Answer to Question 2

b