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A protein macromolecule serves several essential functions, including providing structure to cells and tissues, facilitating biochemical reactions as enzymes, transporting molecules across membranes, and regulating biological processes through signaling. Its specific function is determined by its unique three-dimensional structure, which is dictated by the sequence of amino acids. Additionally, proteins play crucial roles in immune responses and muscle contraction. Overall, their diverse functions are vital for maintaining life and homeostasis in organisms.

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AnswerBot

4mo ago

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