DNA molecule is much more stable than RNA because of the replacement of URACIL group in RNA by THYMINE in DNA. Because Thymine
Thymine
Thymine is one of the four nucleobases in the nucleic acid of DNA that are represented by the letters G–C–A–T. The others are adenine, guanine, and cytosine. Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. In RNA, thymine is replaced by the nucleobase uracil. Thy…
What is responsible for the increased stability of DNA?
What is responsible for the increased stability of DNA compared to RNA? DNA is a more stable molecule than RNA because it lacks a hydroxyl group on the 2' carbon and is therefore more resistant to cleavage, and because the two sugar-phosphate backbones are held together by many hydrogen bonds between nitrogenous bases.
Why is DNA more stable than RNA Quizlet?
c) DNA is more stable because it forms phosphodiester bonds while RNA does not. d) DNA strands have directionality to them, while RNA strands do not. How do the structures of RNA and DNA differ?
Is RNA stability affected by RNase exposure?
As even the slightest exposure to RNase can impact RNA stability, IDT has not performed rigorous long term stability studies for RNA.
Why do RNA molecules catalyze reactions?
RNA molecules can catalyze some reactions because they (1) have exposed hydroxyl functional groups and (2) can fold into shapes that then can function in catalysis. `A major theme in this chapter is that the structure of molecules correlates with their function.
What gives additional stability to DNA?
Thymine as DNA base avoid this ambiguity since any uracil in a DNA strand must have come from a cytosine and should be replaced by a new cytosine. Hence, thymine confers additional stability to DNA over RNA.
Which of the following determines DNA stability and why?
The main bonding in DNA which renders the double helix structure so stable is that of hydrogen bonds. Between the complementary base pairs, hydrogen bonds connect the two strands of the helix. There are 3 H bonds between Guanine and Cytosine and 2 between Adenine and Thymine.
What is the structural difference between DNA and RNA?
DNA and RNA are different from their structure, functions, and stabilities. DNA has four nitrogen bases adenine, thymine, cytosine, and guanine and for RNA instead of thymine, it has uracil. Also, DNA is double-stranded and RNA is single-stranded which is why RNA can leave the nucleus and DNA can't.
Why DNA is better genetic material than RNA?
Solution : DNA is more stable than RNA because DNA contains deoxyribose, RNA contains ribose, characterised by the presence of the 2'OH on the pentose ring. This OH group makes RNA less stable and highly reactive.
What are the features that contribute to the stability and the ability of the DNA to replicate faithfully?
They combined with stronger force for di ester bonds in sugar phosphate backbone, made DNA very stable and ability of DNA replicate and replicate faithfully. DNA can replicate itself because of its double stranded Relate to one Another. Buren's and parent meetings joined with two strength Bear with one other base.
Which of the following contributes to the stability of the DNA double helix?
Answer and Explanation: The answer is C. hydrophobic interactions of bases in the same strand and hydrogen bonding between bases in opposite strands.
What is the functional difference between DNA and RNA?
DNA and RNA perform different functions in humans. DNA is responsible for storing and transferring genetic information, while RNA directly codes for amino acids and acts as a messenger between DNA and ribosomes to make proteins.
How does DNA differ from RNA quizlet?
Firstly, DNA is composed of a double strand forming a helix whereas RNA is only composed of one strand. Also the sugar in DNA is deoxyribose whereas in RNA it is ribose. Finally, both DNA and RNA have the bases adenine, guanine and cytosine. However DNA also contains thymine which is replaced by uracil in RNA.
Which of the following correctly describes a difference between DNA and RNA?
Which of the following correctly describes a difference between DNA and RNA? DNA occurs in the nucleus, whereas RNA only occurs outside the nucleus.
Why DNA is best genetic material?
With the exception of certain viruses, DNA rather than RNA carries the hereditary genetic code in all biological life on Earth. DNA is both more resilient and more easily repaired than RNA. As a result, DNA serves as a more stable carrier of the genetic information that is essential to survival and reproduction.
Why does RNA degrade faster than DNA?
First, RNA by its very structure is inherently weaker than DNA. RNA is made up of ribose units, which have a highly reactive hydroxyl group on C2 that takes part in RNA-mediated enzymatic events. This makes RNA more chemically labile than DNA. RNA is also more prone to heat degradation than DNA.
Which is not a difference between RNA and DNA?
Answer and Explanation: The correct answer is: (c) DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars. See full answer below.
Why can RNA molecules catalyze reactions?
RNA molecules can catalyze some reactions because they (1) have exposed hydroxyl functional groups and (2) can fold into shapes that then can function in catalysis . `A major theme in this chapter is that the structure of molecules correlates with their function.
What is complementary pairing between bases?
d) Complementary pairing between bases is required for copying nucleic acids. One end has a free phosphate group on the 5' carbon; the other end has a free hydroxyl group bonded to the 3' carbon. Nucleic acids are directional, meaning that there are two different ends.
What type of interactions occur in the stem portion of hairpins?
The same types of hydrogen bonds and hydrophobic interactions would occur as observed in the "stem" portion of hairpins in single-stranded RNA. Viruses are particles that infect cells. In some viruses, the genetic material consists of two strands of RNA, bonded together via complementary base pairing.
Is a triple helix hydrophobic?
In a triple helix, the bases are unlikely to align properly for hydrogen bonding to occur, so hydrophobic interactions would probably be more important. Before Watson and Crick published their model of the DNA double helix, Linus Pauling offered a model based on a triple helix.
Can RNA replicate?
An RNA replicase would undergo replication and be able to evolve . It would process information in the sense of copying itself, and it would use energy to drive polymerization reactions. It would not be bound by a membrane and considered a cell, however, and it would not be able to acquire energy.
Does Chargaff's rule apply to RNA?
Chargaff's rules do not apply to RNA, since it is single-stranded and the pairing is not consistent throughout the molecules.
Do ribozymes have tertiary structures?
No. Catalytic activity in ribozymes depends on the tertiary structure generated from single-stranded molecules. Double-stranded nucleic acids do not form tertiary structures. To replicate a ribozyme, a complete complementary copy must be made.