?
In the resting cell, depicted in this figure, sodium is
A. too large to pass through any channels.
B. pushed into the cell by diffusion but out of the cell by electrostatic pressure.
C. pushed out of the cell by diffusion but into the cell by electrostatic pressure.
D. pushed into the cell by both diffusion and electrostatic pressure.
Answer: D
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Stress-related prenatal complications are greatly reduced when mothers
A) have partners and friends who offer social support. B) take a low dose of antianxiety medication during pregnancy. C) take a folic acid supplement during pregnancy. D) are placed on bed rest during the third trimester.
A screening device is able to indicate a problem when it is present and accurately indicate the absence of a problem when none exists. In psychological terms, this would constitute
A) screening specificity. B) screening sensitivity. C) differential diagnosis. D) sensitivity and specificity.