Carbon, Hydrogen, Oxygen, Sulfide
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Originally the definition of organic compounds was those chemical compounds that could only be made by living things. However as chemists learned ways to make these compounds the definition was changed to complex carbon compounds.
A chemotroph makes organic compounds from inorganic compounds.
To make organic compounds
Oxygen is found in literally millions of compounds, in both organic and inorganic chemistry.
Hydrocarbons.
Proteins
Plants use sugars produced during photosynthesis to make organic compounds. Photosynthesis is a plants method of making food for itself.
The definition of organic compounds says that it must contain carbon molecules. There is no organic compound without carbon. So, carbon is called the backbone of organic compounds.Carbon has four electrons available for bonding, and in order to become stable, it must form four covalent bonds. Therefore, it has the ability to form chains. Carbon can have multiple hybridizations and bonding options.
Three other elements that make up most organic compounds are: 1. NITROGEN 2. HYDROGEN 3. OXYGEN
Plants can use PGAL (phosphoglyceraldehyde) to make various organic compounds such as glucose for energy production, cellulose for cell walls, and lipids for cell membranes. Additionally, PGAL can be used in the production of amino acids and other compounds essential for plant growth and development.