Enzymes that work in the stomach must adjust to the unique environment by being able to A. function in an acidic environment
B. function in a neutral environment
C. function in a basic environment
D. function in an acidic and basic environment

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.

Select the word from the list that best fits the definition the temperature to which air must cool to be saturated

Facilitated diffusion move large molecules and/or polar molecules across the cell membrane. what does facilitated diffusion use to do this?