The pH of a solution with a H+ concentration of 0.0000567 is
a. between 4 and 5
b. between 5 and 6
c. between 6 and 7
d. between 7 and 8
e. none of the above
A
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Lipid-soluble hormones, such as progesterone, exert their effects by forming hormone-receptor complexes that
A. activate a G protein and second-messenger cascade. B. bind to DNA and initiate transcription. C. open ion channels in the cell membrane. D. activate adenylate cyclase.
As blood moves from the arterial end to the venous end of a capillary, net filtration pressure
A. decreases, as blood hydrostatic pressure decreases. B. remains the same, as rises in blood osmotic pressure are offset by declines in tissue osmotic pressure. C. decreases, as blood colloid osmotic pressure decreases. D. increases, as blood hydrostatic pressure rises. E. increases, as blood colloid osmotic pressure rises.
Molarity is measured in the units of moles solute/L solution.
Answer the following statement true (T) or false (F)
The effective plasma concentration of a hormone is normally regulated by appropriate adjustments in the hormone's rate of
a. excretion b. binding to plasma proteins c. metabolic inactivation d. secretion e. binding with target-cell receptors