Proteins are large, complex molecules that play many critical roles in the body. Here are some true statements about proteins:
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Made of Amino Acids: Proteins are composed of long chains of amino acids, which are linked together by peptide bonds.
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Structure and Function: The specific sequence of amino acids determines the protein's structure and ultimately its function in biological processes.
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Enzymatic Role: Many proteins function as enzymes, catalyzing biochemical reactions that are essential for life.
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Transport and Storage: Certain proteins are involved in the transport and storage of molecules, such as hemoglobin, which carries oxygen in the blood.
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Immune Response: Proteins such as antibodies play a key role in the immune system, helping to identify and neutralize foreign objects like bacteria and viruses.
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Structural Components: Proteins provide structural support in cells and tissues, such as collagen in connective tissues and keratin in hair and nails.
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Energy Source: While not the primary function, proteins can serve as an energy source if carbohydrates and fats are not available.
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