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National 5 Cell Biology Proteins We are learning to: • State that proteins are made of a chain of amino acids • State that the order of amino acids determines the function of a protein • Give examples of functions of proteins What I'm looking for: • Description of the structure of a protein • Table showing functions and examples of proteins What are proteins? Proteins are made of long chains of small molecules called amino acids. protein molecule one amino acid There are over 20 different kinds of amino acid. Proteins are used by the body for growth and repair. 1 5 of 20 27 © Boardworks Ltd 2005 2004 Functions of Proteins • Watch the video • Listen closely for the different functions of a protein • Complete the card sort in your group • Fill out the table in your booklet Functions of Proteins Protein Haemoglobin Function Carry oxygen around the body Antibodies Produced by white blood cells and protect body from harmful microbes Hormones Chemical messengers e.g. insulin, testosterone, oestrogen, adrenaline Protein Enzymes Transport Function Speed up chemical reactions e.g. amylase, catalase, phosphorylase Movement of molecules e.g. membrane proteins Structural Provide shape and support e.g. collagen, keratin, actin and myosin I can: • State that proteins are made of a chain of amino acids • State that the order of amino acids determines the function of a protein • Give examples of functions of proteins
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