Mention the constituents of organic molecules



(a) Carbon and hydrogen are components of all organic substances.
(b) Many of them also contain oxygen.
© Nitrogen is a constituent of all amino acids, proteins, nucleic acids, chlorophyll, auxin, cytokinins and : vitamins. Sulphur occurs in methionine, cystine and ; cystine amino acids and form number of proteins, (d) Phosphorus is present in nucleotides, higher nucleotides, coenzymes, DNA, RNA etc