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Which important substances in living things are organic compounds?

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Two diagrams show the three-dimensional structure of a methane molecule: panel A uses a ball-and-stick model with a central carbon atom connected to four hydrogen atoms in a tetrahedral arrangement, while panel B illustrates the bond angle of 109.5 degrees and bond length of 1.09 angstroms between carbon and hydrogen atoms. — chemical compound Methane, in which four hydrogen atoms are bound to a single carbon atom, is an example of a basic chemical compound. The structures of chemical compounds are influenced by complex factors, such as bond angles and bond length.

Organic compounds are chemical substances that contain carbon atoms covalently linked to other elements, such as hydrogen, oxygen, or nitrogen. All living things depend on these compounds, which form the structural framework and functional basis of life.1

The four major types of organic biomolecules essential to living organisms are:

Carbohydrates: These serve as vital energy sources and structural components for all life.23
Lipids: This diverse group includes fats and oils that act as long-term energy storage, chemical messengers, and fundamental components of cellular membranes.42
Proteins: These complex molecules are essential for life, acting as structural elements, transporters, and enzymes that catalyze metabolic reactions.25
Nucleic acids: Including DNA and RNA, these compounds store and transmit the genetic information necessary for protein synthesis and inherited characteristics.26

Other vital organic substances found in living things include hemoglobin, chlorophyll, hormones, and vitamins.1