What is ph, and why is it carefully controlled in living organisms?

Which of these statements are true about scientific theories and hypothesis

Match the description of each organism to the appropriate category

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.