Andrea wants to improve her flexibility. she is already doing flexibility and strength-building exercises during her workout. which type of exercise would not complement andrea’s present workout very well?
a. biking
b. cross country skiing
c. swimming
d. weightlifting

Patrick’s parents are worried that he may face discrimination in his new neighborhood. which factor is most likely to cause worry to his parents? a. patrick has unusual pets at home. b. patrick belongs to a different culture than that of the majority group. c. both patrick’s parents hold jobs outside the home. d. patrick likes a particular sport.

Which of the following is characteristic of the lytic cycle? a) viral dna is incorporated into the host genome. b) the viral genome replicates without destroying the host. c) a large number of phages are released at a time. d) the virus—host relationship usually lasts for generations.

Which is not an effect of aging? secondary sex characteristics appear bones shrink and become more brittle skin becomes drier and less elastic hearing and vision become less sharp