Vitamin k, one of the fat-soluble vitamins, plays a role in both bone health and blood clotting. there are two primary forms of the vitamin: phylloquinones and menaquinones. choose the correct statement about vitamin k. a. menaquinones are the primary form of vitamin k in the diet. b. vitamin k deficiency inhibits the blood’s ability to clot. c. excessive use of broad-spectrum antibiotics may cause vitamin k toxicity. d. the major source of vitamin k in our diets is from fortified grains.

b. Vitamin K deficiency inhibits the blood’s ability to clot.

Explanation:

The main form is vitamin K1 (phylloquinone); followed by vitamin K2 (menaquinone), formed from the bacterial action on the large intestine tract and a third compound, vitamin K3 (menadione), a synthetic fat-soluble molecule. These vitamins can be found in many foods: in green vegetables (lettuce, cauliflower and spinach), in tomatoes, Brazil nuts, cashews, potatoes, contained in soybean oil, egg yolk, milk and to a lesser extent in wheat and oats.

Vitamin K participates in blood clotting, its deficiency can make it difficult to stop bleeding. Also causing damage to the body when in excessive concentration, for example: dyspnea (shortness of breath), and chest pain in adults with high vitamin K1 disorder and hyperbilirubinemia in newborns whose mothers in gestation underwent treatment with based on vitamin K3.

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geologic time scale (for gradpoint) =)