Multiple choice

Which sub type of vitamin K is synthesised by human tissues?

  1. Menaquinone-4 (MK-4)

  2. Menaquinone-7 (MK-7)

  3. Menaquinone-9 (MK-9)

  4. Menaquinone-8 (MK-8)

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

Menaquinone-7 is not produced by human tissues. MK-7 may be converted from phylloquinone (K1) in the colon by E. coli bacteria.