What are the precursors that make up macromolecules

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

If your blood becomes too concentrated with iona, what will happen to the red blood cells

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.