Question

Which is the correct definition of metabolism? A. The time when you develop physical characteristics of adults of your own gender. B. The process by which the body gets energy from food. C. Chemical substances produced in certain glands that help to regulate the way your body functions. D. The stage of life between childhood and adulthood, usually beginning somewhere between the ages of 11 and 15.

Answer 1

Biologically speaking, metabolism is the sum of all chemical processes within the body, though it is often referred to as those which involve digestion and cellular respiration.

That said, the answer here should be B: The process by which the body gets energy from food.

For the record, A is the definition of puberty, C is likely the definition of hormones, and D is the definition of adolescence.