Question

The pentose sugar present in DNA is ribose.
(a) True
(b) False

Answer 1

Hint: A molecule composed of two polynucleotide chains that coil around each other to form a double helix is known as deoxyribonucleic acid or DNA.

Complete answer:
The pentose sugar found in nucleic acids has five carbon atoms. A nucleoside is the combination of a base and sugar. Ribose is the pentose sugar present in RNA, with one oxygen atom attached to each carbon atom. Deoxyribose sugar is the pentose sugar found in DNA. The presence of the hydroxyl (-OH) group on the 2' carbon of the ribose and its absence on the 2' carbon of the deoxyribose is the difference between the two sugars.
- DNA carries genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses.
-The strands of DNA in each of your cells would be 6 feet long if unwound and linked together.
- Of the 3 billion base pairs in the human genome, only 0.1% are unique to us so we are all 99.9 percent alike.
- Only about 3 percent of your DNA is genes and the human genome contains 3 billion base pairs of DNA. DNA molecules are in the shape of twisted ladders. The bases are– adenine (A) and pairs with thymine (T), cytosine (C), and always pairs with guanine (G), and are locked together in pairs with hydrogen bonds.
- It was widely believed that proteins stored genetic information, Friedrich Miescher discovered DNA in 1869, but scientists discovered DNA was the genetic material in cells in 1943.
- A new technology that allows us to edit genomes is discovered and called CRISPR.
So, the given statement is ‘false’. 

Note: A polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes is known as Ribonucleic acid or RNA and it is single-stranded. In RNA strand each sugar is attached to one of four bases-adenine (A), uracil (U), cytosine (C), or guanine (G) and has a backbone made of alternating ribose and phosphate groups.