When explaining how carbon dioxide combines with water to form carbonic acid as part of acid-base lecture, the faculty instructor emphasized that which enzyme is needed as a catalyst for this reaction?
A)
Carbonic anhydrase
B)
Phenylalanie hdroxylase
C)
Hydrolases
D)
Trypsin
Ans:
A
Feedback:
Although CO2 is a gas and not an acid, a small percentage of the gas combines with water to form H2CO3. The reaction that generates H2CO3 from CO2 and water is catalyzed by an enzyme called carbonic anhydrase.
You might also like to view...
The nurse notifies the primary care provider that the patient is experiencing pain. The provider gives the nurse a telephone order for morphine 4 mg intravenously every hour as needed for pain. How should the nurse document this telephone order?
1) 09/02/10 0845 morphine 4 mg intravenously q 1 hour PRN pain. Kay Andrews, RN 2) 09/02/10 0845 morphine 4 mg intravenously q 1 hour PRN pain T.O.: Dr. D. Kelly/Kay Andrews, RN 3) 09/02/10 0845 morphine 4 mg intravenously q 1 hour PRN pain V.O.: Dr. D. Kelly/Kay Andrews, RN 4) 09/02/10 0845 morphine 4 mg intravenously q 1 hour V.O. Kay Andrews, RN
During the assessment of a client's eyes, the nurse suspects that the client has ptosis. Which of the following did the nurse most likely find?
1. The palpebral conjunctiva is exposed. 2. The iris and cornea are reddened. 3. The eyelid is drooping. 4. The eyelids are swollen and puffy.
Which option reflects the nurse's duty regarding use of equipment?
1. The nurse is required to select the proper equipment and to use it correctly. 2. Nurses are responsible for cleaning and repairing equipment so that it can be used readily. 3. Nurses should modify equipment so that it meets the particular patient's requirements. 4. Nurses have no responsibility for use or maintenance of equipment.
Multiple organ dysfunction syndrome (MODS) usually results in
a. a hypermetabolic state. b. a hypometabolic state. c. marasmus. d. kwashiorkor.