Question

All of the following apply to enzyme structure and function EXCEPT: (choose what does not apply to the question)

A. enzyme active sites function to lower the activation energy of substrate molecules B. enzymes may require coenzymes that change the shape of the active site C. enzymes increase the speed of chemical reactions D. enzymes may have allosteric sites that are used to regulate substrate-active site binding E. enzymes may require cofactors such as Ca++ that improve the binding of the substrate to the active site AB. all of the above are properties of enzymes, no exception AC. none of the above are properties of enzymes

Answer 1

All the given points from A to E are true about enzymes. Enzyme active sites do function to lower the activation energy of substrate molecules and they may require coenzymes that change the shape of the active site. Enzymes increase the speed of chemical reactions also they may have allosteric sites that are used to regulate substrate-active site binding. Along with co-enzymes, they may also require cofactors such as Ca++ that improve the binding of the substrate to the active site.

Hence the correct option is likely to be AB i.e, all of the above are properties of enzymes, no exception