Large molecules must first be broken down into simpler molecules in the process
known as...
a. Digestion
b. Circulation
c. Excretion
d. Respiration

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.