The basic unit of nucleic acid is:
Correct answer: D. Nucleotide
- A. Pentose sugar
- B. Nucleoid
- C. Nucleoside
- D. Nucleotide
Explanation
The nucleic acids (DNA and RNA) are molecules having complex structures and very high molecular weights. A nucleic acid is composed of many nucleotide molecules joined into a linear, unbranched chain. A nucleotide is an organic compound consisting of a nitrogen containing purine or pyrimidine base linked to a sugar (ribose or deoxyribose) and a phosphate group.
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About Biological Molecules
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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