in the fall, the leaves of some trees change color. this happens because chlorophyll breaks down and the accessory pigments become visible. what hormone is responsible for this?

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

Actual age your first developed of age well comparison age refers to absolute age true or false

Nucleic acid certain protein cell membranes certain carbohydrates