HELP How does structure relate to the function of macromolecules? Include at least one example of how structure relates to the function of macromolecules in your answer.

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.

Idon’t understand this can someone give me the answer? you

Agland that serves both the digestive and the endocrine systems is called