Which of the following substances would most easily pass through the plasma membrane of a cell?
Water-soluble hormones
Water
Ions
Steroid hormones
Large organic proteins
steroid hormones
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Which embryonic structures give rise to the common carotid arteries?
A. The dorsal aorta B. Aortic arch III C. The aortic sac D. Pharyngeal pouches E. Vitelline artery
Which is the most common form of color blindness?
A) blue-yellow B) green-yellow C) yellow-orange D) blue-red E) red-green
Action potentials from sympathetic neurons ________ glomerular filtration rate by causing ________.
A. increase; dilation of afferent glomerular arterioles B. increase; dilation of efferent glomerular arterioles C. decrease; constriction of afferent glomerular arterioles D. decrease; constriction of efferent glomerular arterioles
If the dose of a drug is 16 g, how many doses (in g) are contained in 50,000 mg?
a. 0.0032 b. 31.25 c. 3.125 d. 312.5