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STD 12 - 5. molecular basis of inheritance — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
Which of the following is a nucleoside?
  • A
    Adenosine, Adenylic acid, Cytosine
  • ✓
    Adenosine, Guanosine, Cytidine
  • C
    Cytidylic acid, adenosine, Adenylic acid
  • D
    Guanylic acid, Cytosine, Adnosine
✓

Answer

Correct option: B.
Adenosine, Guanosine, Cytidine
b
Nucleoside consists of any of the four nitrogenous bases and deoxyribose sugar. It does not contain the attached phosphate group. The nucleoside is formed by the adenosine, guanosine,and cytidine because these are the three nitrogenous bases found to be present.

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