J. ORGANIC AND INORGANIC COMPOUNDS. Living things are made up of inorganic
and organic compounds. Compounds that do not contain both carbon and hydrogen are called
inorganic compounds. The principal inorganic compounds found in living things are water, salts,
and inorganic acids and bases. Organic compounds are compounds that contain both carbon and
hydrogen. The classes of organic compounds found in living things are carbohydrates, proteins,
lipids, and nucleic acids.
REVIEW QUESTIONS
1. Living things are made up of
2. What is the difference between an inorganic compound and an organic compound?
3. Name the four classes of organic compounds.
and
compounds.