What is a difference between embryonic and adult stem cells? embryonic stem cells are undifferentiated; adult stem cells are partially differentiated. it is easier to enucleate embryonic stem cells. the use of embryonic stem cells raises fewer ethical issues than the use of adult stem cells. adult stem cells are easier to grow in culture?

An easy way to calculate the amount of energy available at each level is to what?

How do diseases caused by bacteria and diseases caused by viruses react to antibiotics?

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.