1. Since L-glucose cannot be metabolized, it has no caloric value. Why is L-glucose not the perfect diet aid?

a. it is impossible to produce (synthesize)

b. it is extremely toxic

c. it does not bind to the receptor for the ‘sweet’ taste

d. it is insoluble in water

2. An uncatalyzed reaction has a rate of 4.2 x 10-7 sec-1. When an enzyme is added the rate is 3.2 x 104 sec-1. Calculate the rate enhancement caused by the enzyme.

a. the data are not appropriate for the calculation requested

b. 7.4 x 10-3

c. 3.2 x 104

d. 1.34 x 10-2

e. 7.62 x 1010