The D-form of which of the following amino sugars is commonly found naturally?
A) allosamine
B) althrosamine
C) mannosamine
D) none of these
C
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This relatively large, symmetrical volcano contains interlayered lava flow, pyroclastic deposits, and volcanic mudflows. What kind of volcano is it?
A. caldera B. volcanic dome C. scoria cone D. shield volcano E. composite volcano
If you have two deep-water waves with periods of 5 and 10 seconds, what can you say about their speeds?
a) The speeds are equal. b) The shorter period wave will have greater speed. c) The longer period wave will have greater speed. d) The longer period wave will have more than twice the speed. e) They are both faster than a wave with a wavelength of 200 meters.
The zone of wastage is the portion of a glacier where ____________________ exceed ____________________
Fill in the blank(s) with correct word
What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of an acid catalyst?
A) ether B) ester C) either a or b, depending on the conditions D) neither a nor b