All known diseases caused by prions affect the of the host organism. (
a. skin, (
b. respiratory system, (
c. nervous system, (
d. liver

Choose a mutation from those in model 2 that would be neutral for a cell. explain your reasoning by relating the mutation to the cellular respiration process.

Providing immunity by injecting the body with a weakened form a pathogen is known as

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion