Why should we not take antibiotics without the prescription of a doctor

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

In the water cycle , when does water undergo a chemical change

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from