Think about how different the way you get food is now from the way it was many years ago.

Why do you think the puppy litter was all dark-haired?

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

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.