Metabolism refers to all the chemical reactions in the body, and energetics refers to the flow and transformation of energy 17-1

Metabolism

All the chemical reactions in the body. Cellular metabolism refers to the chemical reactions within cells.

Catabolism

The breakdown of organic molecules. This process releases energy that can be used to synthesize ATP or other high-energy compounds.

Nutrients

Include essential substances such as water, vitamins, mineral ions, carbohyrates, lipids, and proteins. The cardiovascular system distributes oxygen and nutrients to cells throughout the body.

Metabolic Turnover

Most structures in the cell are temporary, not permanent. Their removal and replacement are part of the process of ___________.

Energetics

The study of the flow of energy and its change(s) from one form to another.

Anabolism

The synthesis of new organic molecules. It involves the formation of new chemical bonds.

Cells (synthesize new organic components for four basic reasons)

To carry out structural maintenance and repairs, to support growth, to produce secretions, and to store nutrient reserves.