Wich of the following is an example of mechanical digestion?

a. the teeth chew food into smaller pieces
b. saliva break down sugar molecules in the mouth
c. bile released from the gallbladder breaks down fat molecules
d. acids in the stomach break down food molecules and create chyme

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm