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 manages the increase of entropy in an organism.
C) Metabolism specifically refers to the biochemical pathways involved in synthesis of macromolecules.
D) Metabolism consists of all the energy transformation reactions in an organism.

Question

Quizplus · Accepted Answer

Metabolism is the sum total of all the chemical reactions that occur in an organism and includes both energy-yielding and energy-requiring reactions. Therefore, option D, which states that metabolism consists of all the energy transformation reactions in an organism, is the correct choice. Option A is incorrect because while metabolism does require a source of energy, it is not necessarily always from food. Option B is incorrect because while some metabolic reactions may help to manage entropy, this is not the primary goal of metabolism. Option C is incorrect because while metabolism includes the synthesis of macromolecules, it also includes many other types of reactions.

Which of the Following Is True of Metabolism in Its