객관식
Which of the following best represents the correct Lewis structure for (ethynol)?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following is the correct Lewis structure for the asparagine (Asn) side chain?
A
A carbon atom bonded to a carboxamide group () and a methylene group ()
B
A carbon atom bonded to a carboxyl group () and a methyl group ()
C
A carbon atom bonded to a thiol group () and a methylene group ()
D
A carbon atom bonded to a hydroxyl group () and a methyl group ()
검증된 단계별 안내1
Recall that the side chain of asparagine (Asn) is derived from the amino acid structure and contains a carboxamide functional group attached to a methylene (-CH2-) group.
Identify the carboxamide group as a carbon atom double bonded to an oxygen atom and single bonded to a nitrogen atom, which in turn is bonded to two hydrogens (–CONH2).
Recognize that the methylene group (-CH2-) connects the side chain to the alpha carbon of the amino acid backbone.
Compare the given options by checking which one correctly shows a carbon bonded to both a carboxamide group and a methylene group, rather than other functional groups like carboxyl (-COOH), thiol (-SH), or hydroxyl (-OH).
Conclude that the correct Lewis structure for the asparagine side chain must feature a carbon atom bonded to a carboxamide group and a methylene group, consistent with the known chemical structure of asparagine.
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