MCQ Detailed View

Vitamins are essential nutrients required by the human body in small amounts to maintain health, support growth, and perform various biological functions. They are classified into fat-soluble and water-soluble vitamins based on how they are absorbed, transported, and stored in the body.

Fat-soluble vitamins include Vitamin A, D, E, and K. These vitamins dissolve in fats and oils and are usually stored in the liver or fatty tissues for later use. They are absorbed along with dietary fat, which makes them easier to store but harder to excrete. Excess intake of fat-soluble vitamins can lead to accumulation and potential toxicity if taken in very large amounts.

Water-soluble vitamins, on the other hand, dissolve in water and are not stored in large amounts. They are generally excreted in urine if consumed in excess, so the body needs a continuous supply from the diet. The major water-soluble vitamins include Vitamin B complex and Vitamin C.

In this MCQ, Vitamin B is the correct answer because it is water-soluble, while Vitamins A, D, and E are all fat-soluble. Vitamin B includes multiple types like B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine), and B12 (cobalamin), each with unique functions such as supporting energy metabolism, red blood cell production, and nervous system health.

Understanding the difference between fat-soluble and water-soluble vitamins is essential in biology. It helps in learning how nutrients are absorbed, stored, and utilized in the human body, and explains why some vitamins can accumulate while others need to be consumed regularly.