Answer:
3. Dose
4. False
4. False
Medicene is the art or science of restoring or preserving health or due physical condition, as by means of drugs, surgical opeartions or appliances, or manipulations: often divided into medicine proper, surgery, and obestetrics.
A dose is a substance, situation, or quantity of anything analogous to medicine, espoecially of something disagreeable. In other words, it's a quantity of medicine prescribed to be taken at one time.
Prescribe in medical terms means to desginate or order the use of (a medicine, rememdy, treatment etc.)