The cerebral cortex is very wrinkled. how does the wrinkling make the brain more efficient?

It is allows the cerebral cortex to have much more surface area and therefore, room to have neurons and information to be stored within the brain. If the cerebral cortex was flat and smooth, not wrinkled, less information would be able to be stored in it. ]

hope this helps 

Enzyme. anything that ends in "ase" is usually an enzyme.