Which vitamin is also known as ascorbic acid? MCQ with Answer and Explanation

Explanation:
Vitamins A, D, E, and K are fat-soluble, stored in body fats and liver. Vitamin K is essential for blood clotting (synthesis of prothrombin). Vitamin B complex and vitamin C are water-soluble, excreted in urine and not stored extensively. Fat-soluble vitamins require dietary fat for absorption. Excess of fat-soluble vitamins can cause toxicity (hypervitaminosis).

Explanation:
Myoglobin is a red protein in muscle cells that stores oxygen and facilitates its diffusion during muscle contraction. It has a higher affinity for O₂ than hemoglobin, allowing oxygen transfer from blood to muscle. Hemoglobin is in RBCs, hemocyanin is in some invertebrates, cytochromes are electron carriers.

Explanation:
Primase is an RNA polymerase that synthesizes short RNA primers complementary to the DNA template, providing a free 3'-OH for DNA polymerase to begin synthesis. Helicase unwinds, polymerase extends, ligase joins.