Pick up the list carrying four nucleosides of DNA:
Correct answer: A. Adenosine, Guanosine, Cytidine, Thymidine
- A. Adenosine, Guanosine, Cytidine, Thymidine
- B. Adenosine, Guanosine, Thymidine, Uridine
- C. Adenosine, Uridine, Thymidine, Cytidine
- D. Uridine, Guanosine, Thymidine, Cytidine
Explanation
The correct nucleosides of DNA are Adenosine, Guanosine, Cytidine, and Thymidine. These nucleosides consist of the nitrogenous bases adenine, guanine, cytosine, and thymine, each attached to a deoxyribose sugar. Option A correctly lists all DNA nucleosides. The other options include Uridine, which is incorrect as it is an RNA nucleoside, not a DNA nucleoside.
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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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