Vitamin H is also known as
**Core Concept**
Vitamin H is a water-soluble vitamin that plays a crucial role in the metabolism of fats and proteins. It is essential for the synthesis of fatty acids and cholesterol in the body.
**Why the Correct Answer is Right**
Vitamin H, also known as Biotin, is a coenzyme for several carboxylase enzymes, including acetyl-CoA carboxylase and pyruvate carboxylase. These enzymes are involved in the synthesis of fatty acids and gluconeogenesis, respectively. Biotin is also essential for the synthesis of fatty acid synthase, an enzyme complex responsible for the de novo synthesis of fatty acids. The correct answer is biotin.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Vitamin B12 is a different vitamin that plays a crucial role in the synthesis of DNA and the metabolism of fatty acids and amino acids.
**Option B:** This option is incorrect because Folic Acid is a different water-soluble vitamin that is essential for DNA synthesis and repair.
**Option C:** This option is incorrect because Vitamin K is a fat-soluble vitamin that plays a crucial role in blood clotting and bone health.
**Clinical Pearl / High-Yield Fact**
Biotin deficiency can cause skin rashes, hair loss, and neurological symptoms, and is often seen in individuals with malabsorption syndromes or taking certain medications.
**Correct Answer:** C. Biotin.