Practicing Success
Read the passage given below and answer the following question. |
Which among the following is not a component of nucleotide? (Question 3) |
Pentose sugar Histone Nitrogenous base Phosphate group |
Histone |
The correct answer is option (2) - Histone A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T). In RNA, the base uracil (U) takes the place of thymine. There is a set of positively charged, basic proteins in eukaryotes called histones. |