chapter 5 biol 101 proteins KD
Terms
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selective acceleration of chemical reactions - enzymatic proteins
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example
digestive enzymes catalyze the hydrolysis of the polymers in food - enzymatic proteins
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support - structural proteins
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insects and spiders use silk fibers to make their cocoons and webs. collagen and elastin provide a fibrous framework in animal connective tissues - structural proteins
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storage of amino acids - storage proteins
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ovalbumin is the protein of egg white, used as an amino acid source for the developing embryo - storage proteins
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casein, the protein of milk, is the major source of amino acids for baby mammals - storage proteins
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transport of other substances - transport proteins
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hemoglobin transports oxygen from the lungs to other parts of the body - transport proteins
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example
insulin helps regulate the concentration of sugar in the blood of vertebrates - hormonal proteins
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response of cell to chemical stimuli - receptor proteins
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example
receptors built into the membrane of a nerve cell detect chemical signals released by other nerve cells - receptor proteins
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movement - contractile and motor proteins
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example
actin and myosin are responsible for the contraction of muscles - contractile proteins
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example
responsible for the undulations of cilia and flagella - motor proteins
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protection against disease - defensive proteins
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example
antibodies combat bacteria and viruses - defensive proteins