Although Prion Infectious Agents Are More Closely Related to Viruses

question 15

Multiple Choice

Although prion infectious agents are more closely related to viruses than any other kind of infectious agents, there are still some major differences between the two. Which statement describes a major difference?

• A) Viral infections can always be treated and cured, whereas prion diseases cannot.
• B) Viruses can be transmitted by animal to human or human to human, but prions are always human to human transmission.
• C) Prions are not destroyed by heat, but viruses can be inactivated by heat.
• D) Viruses do not contain protein, whereas prions do.

---

Definitions:

Chromatography

A laboratory technique for the separation of a mixture by passing it through a medium in which the components move at different rates.

Evaporation

The process by which a liquid changes into a gas, typically below its boiling point, at the surface of the liquid.

Filtering

A process of separating solids from liquids or gases using a medium that allows only the fluid to pass through.

Sodium Chloride

A white crystalline substance commonly known as salt, comprised of sodium and chloride ions.