In each step of a dichotomous key, choices are given with directions for what to do next. A) 2

B) 3

C) 4

D) 5

the binding of the substrate is dictated by the shape of each molecule. side chains on the enzyme interact with the substrate in a specific way, resulting in the making and breaking of bonds.

voluntary muscles are controlled by the cerebellum.

gag reflex, poor dentition, gum retraction

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