D) Long chains of amino acids used for building, repair, and maintenance
Proteins are made up of amino acids, and they are used to create substances (like hair, nails, etc.)
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Answer:
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All of these
Bacteria has various economic importance. The beneficial uses of bacteria include fermentation of soy sauce, vinegar yoghurt and cheese. The can als be used in the development of antibiotics. Bacterias are being employed to increase the breakdown of raw sewage and decreasing the time for decomposition. Vitamins can also produced by bacterias sometimes in a large scale industry.
Yes because they need t hat to survive
