Which of the following is the scientific name of Vitamin K ?

Question

Accepted Answer

The correct option is (2):
Phytonadione is the accepted scientific and chemical name for **Vitamin K1 (phylloquinone)**, which is the primary form of Vitamin K found naturally in plants, particularly in green leafy vegetables. This fat-soluble vitamin is absolutely essential for the liver to produce the necessary blood clotting factors (like Prothrombin or Factor II). Without sufficient Vitamin K, the blood cannot clot effectively, leading to a risk of excessive bleeding, which is why it is famously known as the "clotting vitamin." The synthetic version, phytonadione, is often used in medical settings to treat vitamin K deficiency or to reverse the effects of certain anticoagulant medications like warfarin.

The incorrect option is (1):
Ascorbic Acid is the chemical name for **Vitamin C**. It is a water-soluble vitamin that acts as a powerful antioxidant in the body. Unlike Vitamin K's role in coagulation, Vitamin C is crucial for the synthesis of collagen, which is a fibrous protein vital for wound healing, connective tissues, and bone structure. Therefore, associating Ascorbic Acid with the 'K' designation for coagulation is incorrect.

The incorrect option is (3):
Tocopherol is the chemical name for **Vitamin E**. Like Vitamin K, Vitamin E is also a fat-soluble vitamin, but its primary function is dramatically different. Tocopherol acts as the body's major antioxidant, protecting cell membranes from damage caused by free radicals. This protective, antioxidant role is distinct from the coagulation function of Vitamin K.

The incorrect option is (4):
Pantothenic Acid is the scientific name for **Vitamin B5**. This is one of the B-complex vitamins, which means it is water-soluble. Its most vital role in human physiology is to serve as a precursor in the synthesis of Coenzyme A (CoA), a molecule central to numerous metabolic pathways, especially those involved in energy production from fats, proteins, and carbohydrates. Because of its involvement in energy metabolism, it is completely unrelated to the anti-hemorrhagic function of Vitamin K.