A fifteen-year-old female going to the Family Planning Clinic asking for bi rth control pi lls. She says that some of her friends at school are s exually active and that her boy friend is pressuring her to "go all the way." What advice or suggestions would you recommend to her?

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants