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Which statement about amino acids is true?
1. All amino acids possess a carboxyl group (-COOH) and an amino group (-NH2) in their side chain.
2. Amino acids serve as monomers for the synthesis of polysaccharides.
3. Only 10 amino acids are synthesized in the human body and the rest must be obtained from the diet.
4. The R-group (side chain) determines the unique characteristics and functions of each amino acid.
Subtopic:  Amino Acids |
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Level 3: 35%-60%
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Consider the given statements:
Statement I: Glycine is the only amino acid that lacks a chiral carbon.
Statement II: All amino acids in proteins are heteropolymers.
 
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic:  Amino Acids |
Level 3: 35%-60%
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