Biology 302 Dsicussion

1

Ann developed chicken pox when she was in second grade. Later in life, when her children developed chicken pox, she remained healthy even though she was exposed to countless virus particles daily. Explain why!!

2

Your pregnant neighbor Mary has a sore throat and tells you that she is taking some tetracycline antibiotics she had left over from a previous infection.

Give two reasons why her decision is a poor one.

3

AIDS is often treated with a cocktail of several antiviral agents at once. Why is this cocktail more effective than a single agent? What is a physician trying to prevent by prescribing several drugs at once?