Multiple Choice Each of the following is true of enzymes EXCEPT factors such as pH and temperature can change their productivity. they can be used multiple times. they may or may not require cofactors. their active site is specific to the substrate. they increase the activation energy of a reaction.
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Step 1: Enzymes are biological catalysts that speed up the rate of chemical reactions. Show more…
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Each of the following are true of enzymes EXCEPT: They can be used over and over. They may or may not require cofactors & coenzymes. Their active site is specific to the substrate. They increase the activation energy of a reaction. In their absence metabolic reaction would go too slowly to sustain life
Syed H.
Enzymes increase the rate of a reaction in all of the following ways except donating a proton to the substrate. reacting chemically with the substrate. permanently binding the substrate. inducing strain on the substrate. orienting substrates. Enzymes are highly sensitive to pH and temperature because extremes of temperature and pH level change their ionization rate. changes in temperature and pH readily break their peptide bonds. pH and temperature affect their three-dimensional structure and their side chain chemistry. at extreme temperatures and pH levels, coenzymes add chemical groups to the substrate. changes in the environment raise their activation energy. Competitive inhibitors of enzymes work by fitting into a site other than the active site. increasing the activation energy of the enzyme-catalyzed reaction. fitting into the active site. changing the enzyme into an inactive form. altering the shape of the enzyme.
Shaiju T.
Which of the following are properties of enzymes? Select all that apply: Always work more efficiently as temperature increases Stop working when denatured Change shape as they catalyze a chemical reaction Have multiple active sites Will only work when pH is 6.5 - 7.5
Lainey R.
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