When you go down the food chain by keep asking the question what does it eat at what catogory of living things do you always end up

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

Mutations associated with albinism affect proteins involved in synthesis

What organ is the first to receive nutrients that have been absorbed from the digestive tract?