Question

The diagram shows a nucleic acid in the shape of a helix.

Which sugar is present in the nucleic acid that is represented in the diagram?
a) uracil
b) thymine
c) deoxyribose
d) ribose

Answer 1

The correct answer is C) Dexyribose

Answer 2

The correct answer is d) ribose

Step-by-step explanation:

The diagram represents a molecule of RNA (ribonucleic acid) because its contains the nitrogenous bases C (Cytosine) , G (Guanine) , A (Adenine) and U (Uracil). Uracil is only present in RNA molecules, and it replaces Thymine (present in DNA molecules). Unline DNA molecules, RNA contains ribose sugars which have -OH groups attached to each carbon in the sugar ring structure. In contraposition, DNA contains deoxyribose sugars, which lack one oxygen atom in 2' position of the sugar ring.