Which process(es) explain(s) how cells with the same genetic information can produce cells with unique structures and therefore functions? Select all that apply.
mitosis
DNA replication
gene expression
mutation
cell differentiation

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.