MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of these is a secondary messenger? |
| A. | Ca<sup>2+</sup> |
| B. | Mg<sup>2+</sup> |
| C. | Na<sup>+</sup> |
| D. | K<sup>+</sup> |
| Answer» D. K<sup>+</sup> | |