Your best friend's dad went to the doctor recently because he had a cough for about two weeks. The doctor suspects a diagnosis of pneumonia. What radiographic test might the doctor order to obtain images of the anterior, posterior, and lateral views of the lungs?

Which of the following statements is accurate in describing the activity of the lactase enzyme? a. lactase can function equally effectively at many different ph levels b. the shape of lactase does not change during the reaction c. lactase is converted to glucose and galactose by the reaction d. one lactase enzyme can catalyze many reactions