Which of the following, not found in cholesterol, is present in bile salts?
A) a hydroxyl group at C-3
B) a double bond between carbon-4 and carbon-5
C) an amide linkage
D) none of the above
C
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Clouds that refract sunlight or moonlight and take on bright violet, green, and pink colors are called:
A) coronal clouds. B) iridescent clouds. C) sprites. D) the glory.
Earth was constructed by the accumulation of material similar to that of many asteroids, meteors and comets.
Answer the following statement true (T) or false (F)
The world's rainforest regions are found under the:
a. subtropical high. b. equatorial low. c. polar high. d. middle latitude low.
Which of the following geologic observations would not bear directly on working out the sequence of geologic events in an area?
A) inclusions of sandstone in a granite pluton B) the feldspar and quartz contents of a granite C) an unconformity between a granite and sandstone D) a well-exposed dike of basalt in sandstone