Question

The sugar units present in natural DNA and RNA, respectively, are
A.D-2-deoxyribose and L-ribose
B.L-2-deoxyribose and D-ribose
C.D-2-deoxyribose and D-ribose
D.L-2-deoxyribose and L-ribose

Answer 1

Hint: DNA and RNA are the type of nucleic acids, which contains strands of pentose with phosphorus and nitrogenous bases. DNA (D-2-deoxyribose) is a double helix strand which transports genetic information of cells whereas RNA(D-ribose) is a single helix strand which decodes the genome transformation.

Complete step by step answer:
DNA and RNA examples of nucleic acids. Nucleic acids are genetic material of the cell which are composed of recurring monomer units known as nucleotides.
There are three principal components are present in each nucleotide which is as follows:
Pentose sugar of total 5 carbons.
Phosphate group
Nitrogenous base

DNA: it is called deoxyribonucleic acid, which is a more stable double-stranded form of nucleic acids. It stores the genetic blueprint of cells.
It contains a double helix structure.
It has antiparallel strands, they run in different directions.
Its base composition is of Adenine(A), Guanine(G), Cytosine(C), and Uracil(U)
It consists of hydrogen bonds between A&T and C&G.

RNA: It is called ribonucleic acid, is a more volatile single-stranded form of nucleic acids. It transfers the genetic transformation for decoding.
It contains a single strand or helix structure.
Its base composition is of Adenine(A), Guanine(G), Cytosine(C), and Thymine(T)
It does not have a special hydrogen bond, unlike DNA.
The sugar units in DNA and RNA are D-2-deoxyribose and D-ribose.
Thus, the correct option is (C).

Note:
DNA and RNA have few structural differences within it.
DNA and RNA can also be called polymers of nucleotides.
Both nitrogen and phosphorus are attached to carbon 1- and 5- carbons in pentose respectively.