You can see the space-filling models of two fatty acids below (1 and 2). Which fatty acid is essential, and which one is non-essential for humans?

MCQS on the biological importance of organic molecules. Topics include bioorganic mechanisms, chirality, lipids, carbohydrates, animo acids, peptides, proteins, nucleic acids, enzymes, coenzymes, and coupled reactions, and lipid, carbohydrate, amino acid, and nucleotide metabolism.