Why does a lack of sleep affect your body's performance?

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

Why do you need two different circuits of blood vessels in your body?

The pituitary gland is controlled by sex hormones true or false.