Which sentence best describes a gene? a. a gene is part of the cell membrane b. a gene is a complete protein c. a gene is a segment of a dna strand d. a gene is a segment of a protein

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.