A) Vitamin-C
B) Protein
C) Glucose
D) Potassium
Correct Answer: B
Solution :
The name ?protein? means ?pre-eminent or first? was given by Berzelius (1838) because the proteins play a very significant role in structure and metabolism of cells and also play important role in growth and repair system. Vitamin-C is a colourless, crystalline, water soluble vitamin. It is required for the maintenance of healthy connective tissue. Glucose is a white crystalline sugar \[({{C}_{6}}{{H}_{12}}{{O}_{6}})\] occurring widely in nature. It is a major energy source being transported the in blood, lymph and cerebrospinal fluid to the cells, where energy is released in the process of glycolysis and Krebs cycle. Potassium is a soft silvary metallic element. It is important for both plants and animals. In animals, the passage of sodium and potassium ions across the nerve-cell membrane is responsible for the change of electrical potential that accompany the transmission of impulse.
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