A) It belongs to the lyase class of enzymes.
B) The reaction is reversible in erythrocytes (ΔG is very small).
C) It is a Class II aldolase.
D) The mechanism involves formation of a Schiff base with an active-site lysine side-chain.
E) The products are an aldotriose phosphate and a ketotriose phosphate.

A) glucokinase acts on glucose at low concentrations.
B) glucokinase acts on glucose only at high glucose concentrations.
C) glucokinase phosphorylates most of the glucose at low glucose levels.
D) hexokinase acts on glucose only at high levels of glucose.
E) hexokinase acts at about half-maximal velocity at glucose concentrations of 4-5 mM.

A) low levels of glucokinase.
B) glucokinase is induced.
C) insufficient insulin is produced.
D) production of little liver glycogen.
E) all are true.