14.4 When aspirin was first commercially available its was …..
A sold over the counter
B only available in liquid form
C available only in clinics and hospitals
D available for home use with a prescription.
14.5 Early penicillin clinical trials were hampered by an inadequate supply of the drug. A good source for a mold strain that produced a lot of the compound was found in a ___.
A moldy piece of bread
B mold found in a week-old cup of coffee
C moldy cantaloupe at a market
D a black mold found on the wall in a damp room
14.6 Penicillin resistant strains of bacteria developed the enzyme __ to inactivate the drug.