Proteins notes - Chapter6Proteins: andInDepth 15:44 WhatAreProteins?ChainsofAminoAcids Proteins: Containcarbon,hydrogen,oxygen,nitrogen AminoAcids

Proteins notes - Chapter6Proteins: andInDepth 15:44...

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Chapter 6 Proteins: Crucial Components of All Body Tissues and In Depth 15:44 What Are Proteins? Chains of Amino Acids Proteins : large complex molecules composed of amino acids Contain carbon, hydrogen, oxygen, nitrogen 20 different amino acids are use to make proteins Amino Acids Essential Amino Acids Cannot be produced by our bodies Must be obtained from food 9 of 20 are essential Nonessential amino acids Can be made by our bodies 11 of 20 are non-essential Why Do We Need Proteins? Cell growth, repair, and maintenance Enzymes Hormones Fluid and electrolyte balance pH balance Antibodies to protect against disease Immune function Energy source Proteins in the body Protein shape determines function How Are Proteins Made? Amino acids are joined to each other by peptide bonds
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The structure of each protein is dictated by the DNA of a gene Levels of Protein Structure: ex. Muscle Fiber
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