Which of the following is the last step in the sequence of events happening when cyclic AMP acts as a second messenger?
A) Enzymes are activated or deactivated by the action of protein kinases
B) Adenylate cyclase produces cAMP
C) G protein is activated by the binding of a hormone to the receptor
D) G protein activates adenylate cyclase
E) cAMP activates protein kinases
A
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Leukemia is usually due to bone marrow cancer, and it creates a higher number of ________ than normal.
A. WBCs B. platelets C. RBCs D. thrombocytes
Capnography can serve as an indicator of:
A) proper ventilatory depth. B) cerebral perfusion pressure. C) coronary perfusion pressure. D) chest compression effectiveness.
Which of the following describes the duplicity theory of vision?
A. Light adaptation and dark adaptation are adjustments in vision to changing light intensities. B. There are short-wavelength cones and long-wavelength cones. C. A single type of receptor system cannot produce both high sensitivity and high resolution. D. Cones and rods are responsible for both photopic (day) vision as well as trichromatic (color) vision. E. Cones are responsible for both photopic (day) vision as well as trichromatic (color) vision.
On axial images arranged from superior to inferior the first paranasal sinuses to appear are the
A. frontal. B. ethmoid. C. sphenoid. D. maxillary.