Explain how the following mechanisms regulate enzyme activity. | Part A Covalent modification a)The product of a series of reactions acts as an inhibitor for an earlier reaction. | b)Hormones control the synthesis of enzymes. | c)A regulator binds to the enzyme at a site other than the active site. This binding changes the shape of the enzyme and alters the catalytic ability of the enzyme. | d)An inhibitor binds reversibly to the enzymesubstrate complex, blocking the binding of the second substrate to the active site. | e)The activity of an enzyme is influenced by the addition or removal of a group that is covalently bonded to the enzyme. | f)An inhibitor forms covalent bonds to the active site, permanently blocking it. Part B Genetic control a)The product of a series of reactions acts as an inhibitor for an earlier reaction. | b)Hormones control the synthesis of enzymes. | c)A regulator binds to the enzyme at a site other than the active site. This binding changes the shape of the enzyme and alters the catalytic ability of the enzyme. | d)An inhibitor binds reversibly to the enzymesubstrate complex, blocking the binding of the second substrate to the active site. | e)The activity of an enzyme is influenced by the addition or removal of a group that is covalently bonded to the enzyme. | f)An inhibitor forms covalent bonds to the active site, permanently blocking it Part C Allosteric regulation a)The product of a series of reactions acts as an inhibitor for an earlier reaction. | b)Hormones control the synthesis of enzymes. | c)A regulator binds to the enzyme at a site other than the active site. This binding changes the shape of the enzyme and alters the catalytic ability of the enzyme. | d)An inhibitor binds reversibly to the enzymesubstrate complex, blocking the binding of the second substrate to the active site. | e)The activity of an enzyme is influenced by the addition or removal of a group that is covalently bonded to the enzyme. | f)An inhibitor forms covalent bonds to the active site, permanently blocking it. Part D Feedback inhibition a)The product of a series of reactions acts as an inhibitor for an earlier reaction. | b)Hormones control the synthesis of enzymes. | c)A regulator binds to the enzyme at a site other than the active site. This binding changes the shape of the enzyme and alters the catalytic ability of the enzyme. | d)An inhibitor binds reversibly to the enzymesubstrate complex, blocking the binding of the second substrate to the active site. | e)The activity of an enzyme is influenced by the addition or removal of a group that is covalently bonded to the enzyme. | f)An inhibitor forms covalent bonds to the active site, permanently blocking it | | | | |