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The image shows a page from a biology textbook or educational material discussing biopolymers, specifically proteins and peptides. The text explains that proteins and peptides are composed of alpha-amino acids linked by amide bonds formed between the carboxyl group of one amino acid and the amino group of another. It defines a peptide as a chain of fewer than 50 amino acids and a protein as a chain of 50 or more amino acids. The diagram illustrates the formation of a peptide bond through a dehydration reaction, where a molecule of water is removed. It shows two amino acids reacting to form a dipeptide, with the release of -H2O. The image also depicts a general structure of an alpha-amino acid, identifying the amino group, carboxyl group, alpha-carbon, and side chain (R). The text "monomer unit: α-amino acids" indicates that alpha-amino acids are the building blocks of these biopolymers. The image does not contain any information related to the city of Jalingo, Nigeria. It is a close-up shot of printed material.
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