Other Acellular Entities: Prions and Viroids

Review Questions

Which of the following is not associated with prions?

  1. replicating shapes
  2. mad cow disease
  3. DNA
  4. toxic proteins

Hint:

C

Which statement is true of viroids?

  1. They are single-stranded RNA particles.
  2. They reproduce only outside of the cell.
  3. They produce proteins.
  4. They affect both plants and animals.

Hint:

A