What is vitamin E also known as ?

Question

Accepted Answer

The correct option is (3):
The correct answer is Tocopherol. Vitamin E is not a single compound but a group of eight fat-soluble compounds: four tocopherols and four tocotrienols. The most biologically active form and the one most vital for human health is alpha-tocopherol, which is the form commonly measured in the blood and used in supplements. As a whole, the tocopherol family is renowned for its function as a powerful, chain-breaking antioxidant, which primarily works to protect cell membranes, lipoproteins, and DNA from damage by free radicals, supporting immune function and cardiovascular health.

The incorrect option is (1):
Retinol is the chemical name for the biologically active form of Vitamin A. Vitamin A is an entirely separate fat-soluble vitamin that is critical for maintaining healthy vision, particularly in low light (hence its use in the visual pigment rhodopsin). It is also essential for immune response, bone growth, and the healthy differentiation of epithelial cells throughout the body. Therefore, associating the name Retinol with Vitamin E is a factual error.

The incorrect option is (2):
Phytonadione is the technical name given to Vitamin K1, which is found in leafy green vegetables. Vitamin K plays a fundamentally different and critical role in the body compared to Vitamin E. Its primary function is to facilitate the synthesis of various proteins necessary for blood coagulation (clotting). Without adequate Vitamin K, the body would be unable to properly control bleeding, highlighting its distinct physiological purpose from the antioxidant role of Vitamin E.

The incorrect option is (4):
Riboflavin is the scientific name for Vitamin B2. Unlike Vitamin E, which is fat-soluble, Riboflavin is a water-soluble vitamin that belongs to the B-complex family. It functions as a coenzyme, specifically in the form of FAD and FMN, which are critical for energy metabolism, helping the body convert carbohydrates, proteins, and fats into usable energy (ATP). This metabolic role is distinct from the cell-protecting, antioxidant functions of the fat-soluble Vitamin E.