Which of the following examples illustrates osmosis?
a)water leaves the tubules of the kidney in response to the hypertonic fluid surrounding the tubules.
b)digestive enzymes are excreted into the small intestine.
c)white blood cells consume pathogens and cell debris at the site of an infection.
d)calcium is pumped inside a muscle cell after the muscle completes its contraction

Which statement best explains how cellular respiration maintain homeostasis in animals? it maintains body temperature by absorbing energy. it breaks glucose into energy required by the organism. it speeds up metabolism by making oxygen. it produces energy from hormones present in the organism.

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

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.