Children have the ability to synthesize each of the following amino acids, but for which of these are they unable to synthesize a sufficient amount for their needs?
A) histidine
B) proline
C) serine
D) tyrosine
A
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A parcel of air will rise as long as it is
A) denser than surrounding air. B) less dense than surrounding air. C) cooler than surrounding air. D) more humid than surrounding air.
Around the world, photovoltaic technology is quickly being adopted to generate electricity in
A) large-scale commercial power plants and on rooftop home units. B) large-scale commercial power plants but not yet on rooftop home units. C) rooftop home units but not large-scale commercial power plants. D) small electronic applications such as calculators but not yet on rooftops or in commercial power plants.
Describe the process of decompression melting
What will be an ideal response?
In which of the following classes of organic compounds must there be at least two oxygen atoms?
A) carboxylic esters B) ketones C) both a and b D) neither a nor b