Which one is the basic element of organic compounds _________________?
A. Oxygen B. Hydrogen C. Sulphur D. Carbon
A. Oxygen B. Hydrogen C. Sulphur D. Carbon
A. CO2 B. Water C. Lipids D. HCI
A. Monovalent B. Divalent C. Trivalent D. Tetravalent
A. Monosaccharides B. Oligosaccharides C. Ploysacharides D. Carbohydrates
A. NH2 group B. COOH group C. R group D. All of these
A. Monosaccharides B. Oligosaccharides C. Polysaccharides D. None of these