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1. |
Which of the following statements about amino acids is correct? |
A. | Amino acids are uncharged at neutral pH |
B. | Amino acids are classified according to the structures and properties of their side chains |
C. | Amino acids in proteins are mainly in the D-configuration |
D. | Twenty four amino acids are commonly used in protein synthesis |
Answer» C. Amino acids in proteins are mainly in the D-configuration | |