How does the size of a eukaryotic organism normally compare to the size of a prokaryotic organism? a. eukaryotes are usually much larger than prokaryotes. b. eukaryotes are usually much smaller than prokaryotes. c. eukaryotes and prokaryotes are both usually very small organisms. d. eukaryotes and prokaryotes are both usually very large organisms.

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.