When ionic compounds dissolve in water, their ions
A. dissociate or separate from one another.
B. get lost in the solvent.
C. cling tightly together.
D. lose their charge.
E. settle to the bottom of the container.
A
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The distal and collecting tubules are the site of
a. the co-transport carriers for glucose and amino acid reabsorption. b. the organic ion secretory systems. c. aldosterone and vasopressin action. d. both (a) and (c) above. e. both (b) and (c) above.
The apex of the heart is found ________ of the midline of the body.
A. to the right B. in the center C. to the left
If there is an increase in systemic blood pressure, the resulting stretch of afferent arterioles results in reflexive
A. vasodilation of afferent arterioles to keep GFR normal. B. vasodilation of efferent arterioles to lower GFR. C. vasoconstriction of afferent arterioles to keep GFR normal. D. vasoconstriction of efferent arterioles to raise GFR.
During the depolarization phase of an action potential in a neuron
A) K+ ions move from inside to outside the membrane. B) Na+ ions move from outside to inside the membrane. C) the Na/K ATPase pumps Na into the cell. D) K+ and Na+ ions trade places across the membrane.