Multiple choice

Which of the following is the water soluble form of vitamin B9?

  1. Biotin

  2. Cobamamide

  3. Cyanocobalamin

  4. Folic acid

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Folic acid is a form of the water-soluble vitamin B9. Folic acid is itself not biologically active, but its biological importance is due to tetrahydrofolate and other derivatives after its conversion to dihydrofolic acid in the liver.

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