Anurse is preparing to administer a unit of packed red blood cells to a critically ill client. two nurses have performed the verification process, and the unit label indicates that it is in-date and unexpired. on inspection, the nurse notices a large air bubble at the top of the bag. what is the appropriate action by the nurse at this time?

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