[Expert Solution]: d. Methotrexate 7. A 43-year-old man with leuk

d. Methotrexate 7. A 43-year-old man with leukemia is hospitalized for treatment after his prior chemotherapeutic regimen failed to produce remission. A bone marrow biopsy is repeated and indicates the presence of acute lymphoblastic leukemia. The man is started again on a chemotherapeutic regimen. Which of the following chemotherapy drugs interferes with DNA synthesis after its metabolite is incorporated int the growing DNA strand? a. 5-Fluorouracil d. Methotrexate b. Cyclophosphamide e. Vincristine c. Cytarabine 8. A 42-year-Old woman presents to the emergency department with vaginal bleeding for the past 2 days. Her last menstrual period was 1 week ago and has had regular cycles. She has history of hydatidiform mole 8 years ago. A