MCQOPTIONS
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| 1. |
Nucleic acid contains which group of molecules in their constitution? |
| A. | C, H, N and S |
| B. | C, H, O, N and S |
| C. | C, H, N, O, and P |
| D. | C, H, N and O |
| Answer» D. C, H, N and O | |