1. Which of the following can affect human cells? Explain whyor why not.
a. penicillin
b. indinavir
c. erythromycin
d. polymyxin
2. The level of exercise that increases body's core temperature to 39 degrees Celsius
a) may damage muscle enzymes
b) increases efficiency of muscle contraction
c) enhances systemic blood circulation
d) both b and c