Which of the following is true of all lecithins?
A) Their fatty acids are all saturated.
B) Their fatty acids are all unsaturated.
C) There is always a phosphate group bound to carbon 1 of glycerol.
D) There is always an unsaturated fatty acid bound to carbon 1 of glycerol.
C
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As air in the figure above moves from A to B, what will happen to its temperature?
A. It will decrease. B. It will decrease at first, and then increase. C. It will increase. D. It will remain the same.
Smog, the product of NOX, sunlight, and ________, is created by chemical reactions that occur in the atmosphere
A) carbon monoxide B) sulfur oxides C) hydrocarbons D) particulates
What evidence did the Hubble Space Telescope provide to support the nebular theory of solar system formation?
A) proof of the spinning of our solar system B) proof of the expansion of our solar system C) pictures of other spinning stars D) pictures of other stars with dust and gas
In order for a limestone landscape to develop into karst topography, the limestone formation must contain at least 30% if calcium carbonate
Indicate whether the statement is true or false