Biology High School

Which of the following is NOT a major difference between DNA and RNA? RNA is only associated with coding parts of the genome. Uracil replaces thymine in RNA. RNA is single stranded and DNA is double stranded. RNA is much more structurally stable than DNA.

Answers

Answer 1

Answer:

RNA is much more structurally stable than DNA.

Explanation:

Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) are both nucleic acids made up of nucleotide subunits and contains the genetic information of living cells. However, there are few structural and functional differences between them.

Firstly, RNA is a single stranded molecule as opposed to DNA that is a double helical structure consisting of long chains of nucleotides.

Secondly, the nucleotide that makes up both nucleic acids contains nitrogenous bases in its structure. These nitrogenous bases are four viz: Adenine, Guanine, Thymine, and Cytosine. Thymine in the DNA is replaced by Uracil in the RNA molecule.

Also, only the coding parts of the gene are transcibed into a mature RNA. Other non-coding regions are removed during post-transcriptional process. DNA contains both the coding and non-coding regions of the genome.

The answer is D because, DNA is a more structurally stable molecule than RNA. Hence, it can serve as a storage material for genetic information as opposed to the short-lived RNA that is only used to convey the information.

Answer 2

RNA is much more structurally stable than DNA.

The statement that "RNA is much more structurally stable than DNA" is inaccurate. In fact, DNA is generally considered more structurally stable than RNA. The structural stability of nucleic acids is influenced by their composition and the type of bonds present. DNA is a double-stranded molecule with a stable helical structure, and the presence of thymine instead of uracil contributes to its stability. The hydrogen bonding between adenine and thymine (A-T) and cytosine and guanine (C-G) in DNA forms a strong and stable double helix.

On the other hand, RNA is typically single-stranded and contains uracil instead of thymine. The absence of a second strand and the presence of uracil make RNA more susceptible to structural instability. Additionally, RNA is more prone to hydrolysis and degradation due to the presence of the 2'-hydroxyl group in its ribose sugar.

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Related Questions

Which comic book featured the first appearance of iron man?

Answers

I think it is in Tales of Suspense #39 that the cover dated March 1963. May 1968  Iron Man #1 received its own title.

Answer:

the comic book was called Tales of Suspense #39

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