Question

DNA and RNA differs by
A) Nitrogen bases and sugars
B) Nitrogen bases and phosphate groups
C) Number of C-atoms in sugars
D) Sugar and phosphate groups

Answer 1

Hint:Earth’s Life is very diverse, from single-celled protozoans to complex multicellular plants and animals. Basically, all life is made up of the DNA and RNA; they are building blocks of the body.

Complete answer:

DNA (Deoxyribonucleic acid)	RNA (Ribonucleic acid)
Definition:
DNA is long polymer and composed of a deoxyribose, phosphate and backbone made up four bases: thymine, adenine, cytosine, and guanine.	RNA is a polymer composed of a ribose, phosphate and backbone made up of four bases: uracil, cytosine, adenine, and guanine.
Location:
Located in the nucleus and mitochondria.	It is present in the cytoplasm, nucleus, the ribosome.
Sugar portion:
It contains 2-deoxyribose.	It contains Ribose.
Function:
The transmission of genetic information.	The transfer of the genetic code for the formation of protein.
Predominant Structure:
The DNA is a double-stranded.	The RNA is a single-stranded.
Propagation:
DNA has the ability to replicate on its own known as self-replicating.	RNA does not have the ability to replicate on its own, it needs DNA for synthesis.
Nitrogenous Bases and Pairing:
The base pairing in DNA occurs: GC(Guanine pairs with Cytosine) A-T(Adenine pairs with Thymine).	The base pairing in RNA occurs: GC(Guanine pairs with Cytosine) A-U(Adenine pairs with Uracil)

Hence the correct answers option ‘A’.

Note:The deoxyribose sugar of DNA has the one less oxygen-containing hydroxyl group so that is why DNA is a more stable nucleic acid. On the other hand RNA contains ribose sugar and is more reactive than DNA.