For maximum loading of hemoglobin with oxygen at the lungs, the
A) PCO2 should be high.
B) pH should be slightly acidic.
C) PO2 should be about 70 mm Hg.
D) BPG levels in the red blood cells should be high.
E) PCO2 should be low.
Answer: E
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Which is NOT typically a step in the cAMP second-messenger system?
A. A first messenger binds to a transmembrane receptor. B. Active cAMP-dependent protein kinase phosphorylates cell proteins. C. Adenylyl cyclase converts ATP into cAMP. D. There is dissociation of G-protein subunits. E. An activated G-protein subunit phosphorylates cAMP-dependent protein kinase.
Blood travels from the left atrium to the left ventricle through the
A) fossa ovalis. B) semilunar valve. C) conus arteriosus. D) mitral valve. E) tricuspid valve.
CSF is the abbreviation for ____________________________________ fluid
Fill in the blank(s) with correct word
The function of a bursa is to
A. produce fluid. B. increase the articulating surface at a joint. C. provide a fluid-filled cushion that reduces friction. D. provide support for a weak joint. E. bind ligaments to bones.