Which of the following is a pivotal molecule associated with the external surfaces of aggregated platelets and is involved in the intrinsic and extrinsic mechanisms of blood clotting?
A) PGI2
B) PF3
C) Thrombin
D) Thromboplastin (prothrombin activator)
B) PF3
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Trace the circulation of aqueous humor from the site of production to the site of where it is reabsorbed. 1. posterior chamber 2. anterior chamber 3. ciliary body 4. scleral venous sinus 5. pupil
A) 4, 3, 1, 5, 2 B) 2, 1, 5, 3, 4 C) 1, 3, 4, 5, 2 D) 3, 1, 5, 2, 4 E) 5, 2, 4, 1, 3
How is the bulk of carbon dioxide carried in blood?
A) chemically combined with the amino acids of hemoglobin as carbaminohemoglobin in the red blood cells B) as the bicarbonate ion in the plasma after first entering the red blood cells C) as carbonic acid in the plasma D) chemically combined with the heme portion of hemoglobin
At puberty, the hypothalamus becomes more sensitive to feedback inhibition by testosterone
Indicate whether the statement is true or false
Pyruvate dehydrogenase is located in the
A. cell membrane. B. middle of the crista. C. outer compartment of the mitochondrion. D. matrix of the mitochondrion. E. cytosol.