People who experience severe blood loss go into a condition known as hemorrhagic shock. Shock occurs when blood volume returning to the heart is reduced. The heart responds by trying to increase output, which can result in the patient bleeding to death if he or she is not treated in time. Is the an example of positive feedback or negative feedback?

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