MCQOPTIONS
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| 1. |
If the basic formula of an α-amino acid is R-CH(NH2)-COOH, where R is the side chain, what is the primary point of distinction between any two proteins? |
| A. | Number of amino groups |
| B. | Number of carboxyl groups |
| C. | The side chain R |
| D. | Relative positions of amino, carboxyl groups and R |
| Answer» D. | |