For sedentary people, any type of physical activity is seriously impaired by age _____, and productive life ends before age_______.

30 mL of active ingredient is mixed with distilled water to total 300 mL. What is the final concentration (v/v)?

A) 0.1% B) 1% C) 3% D) 10%

A biopsy of the lower lip salivary glands showed replacement of parenchymal tissue by lymphocytes. The patient also had xerostomia and keratoconjunctivitis sicca. These findings suggest which of the following?

a. Lymphoma b. Crohn's disease c. Mumps d. Sjögren's syndrome e. None of the above