16. The NAG6 substrate is hydrolyzed by human lysozyme to form

A. 6 glucosamines + 6 acetic acids
B. NAG₄+ NAG₂
C. NAG₃+ NAG₃
D. NAG₃

17. Gluconeogenesis uses

A. 3 ATPs and 2 GTPs per glucose
B. 2 ATPs and 1 GTPs per glucose
C. 3 ATPs and 3 GTPs per glucose
D. 4 ATPs and 2 GTPs per glucose

18. Saliva contains all of the following except

A. hormones
B. amylase
C. bacteria-killing enzymes
D. antibodies

19. The conversion of pyruvate to oxaloacetate

A. requires biotin
B. involves the fixation of carbon dioxide
C.occurs in the mitochondria
D.all of the above

20. Gluconeogenesis is the

A. formation of glycogen
B. breakdown of glucose to pyruvate
C. breakdown of glycogen to glucose
D. synthesis of glucose from non-carbohydrate precursors