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Structure and Properties of Amino Acids

Q1:

Which of the following is not a sensible grouping of amino acids based on their polarity properties?

A Ala, Leu, and Val

B Arg, His, and Lys

C Phe, Trp, and Tyr

D Asp, Ile, and Pro

ANS:D - Asp, Ile, and Pro

Alanine, Leucine.and Valine are all non polar and aliphatic.
Arginine, histidine and lysine are positively charged.
Phenylalanine, tryptophan and tyrosine are aromatic.
The last options do not relate.



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