What enzyme works to add dna to ends of chromosomes in rapidly dividing cells such as those found in an embryo, to prevent genes from being lost during replication?

a. dna polymerase

b. histones

c. telomerase

d. chromatin

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

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity