1. Antibiotics are effective at treating
A.) a common cold, but not genital warts
B.) a tapeworm infection, but not botulism
C.) strep throat, but not the flu
D.) athlete's foot, but not an ear infection

2. The sneezing, runny nose, and itchy eyes associated with allergies are cause when
A.) smooth muscles reduce the size of air passageways in the lungs
B.) the immune system attacks the body's own cells
C.) mast cells release histamines
D.) infected cells produce interferon,