Which of the following is the constituent or RNA molecule?
Correct answer: B. Ribonucleic acid
- A. Fatty acids
- B. Ribonucleic acid
- C. Ascorbic acid
- D. Deoxyribonucleic acid
Explanation
Option B is correct. Yes, ribonucleic acid (RNA) is the constituent of RNA molecules. RNA molecules are made up of nucleotides, which are composed of a sugar, a phosphate group, and a nitrogenous base. The sugar in RNA is ribose, while the sugar in DNA is deoxyribose. The phosphate group is the same in both DNA and RNA. The nitrogenous bases in RNA are adenine (A), guanine (G), cytosine (C), and uracil (U). Ribonucleic acid is a single-stranded molecule, while DNA is a double-stranded molecule. RNA is also found in the cytoplasm of cells, while DNA is found in the nucleus of cells.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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