AP BIOLOGY

Detailed explanation-1: -Organic molecules are molecules that are made of carbon and hydrogen, and can include other elements. Organic molecules must contain carbon atoms covalently bonded to hydrogen atoms (C-H bonds). They usually involve oxygen and can also contain nitrogen, sulfur, phosphorous, and others.

Detailed explanation-2: -Scientists generally define a molecule as organic when it contains not only carbon, but also at least one other element. Typically, that element is hydrogen, oxygen, nitrogen or sulfur. Some definitions say that a molecule must contain both carbon and hydrogen to be organic.

Detailed explanation-3: -Four elements, hydrogen, carbon, oxygen and nitrogen, are the major components of most organic compounds.

Detailed explanation-4: -To a chemist, the term organic describes chemical compounds that contain carbon and other elements such as hydrogen, oxygen, nitrogen, sulfur, or phosphorus.