GENERAL HISTOLOGY

Detailed explanation-1: -Listen to pronunciation. (meh-TA-buh-lih-zum) The chemical changes that take place in a cell or an organism. These changes make energy and the materials cells and organisms need to grow, reproduce, and stay healthy.

Detailed explanation-2: -Humans obtain energy from three classes of fuel molecules: carbohydrates, lipids, and proteins. The potential chemical energy of these molecules is transformed into other forms, such as thermal, kinetic, and other chemical forms.

Detailed explanation-3: -The energy used by most organisms for metabolism ultimately comes from solar energy. This solar energy is harnessed via photosynthetic organisms to produce carbon-based compounds such as glucose.