Here is the answer to Which of these is a difference between a DNA and an RNA molecule?
Which of these is a difference between a DNA and an RNA molecule?
- Below are the answer and explanations.
What is the difference between DNA and RNA molecules?
1) The base of DNA is ATGC and the unit is deoxyribonucleotide, while the base of RNA is AUGC and the unit is a ribonucleotide.
2) DNA is a double helix structure and its genetic material, RNA is generally single-stranded and is not a genetic material.
3) RNA is a single chain formed by transcribing a strand of DNA as a template with the principle of base complementary pairing, and its main function is to realize the expression of genetic information on protein, which is a bridge in the process of transformation of genetic information to phenotype.
4) Unlike DNA, RNA is generally a long single-stranded molecule and does not form a double helix structure. The base-pairing rules of RNA are basically the same as those of DNA, but G-U can also be paired except for A-U and G-C pairing.
5) In viruses, many viruses only use RNA as their sole carrier of genetic information (unlike cellular organisms that commonly use double-stranded DNA as their carrier).
6) The mRNA in RNA is the template for protein synthesis, and the content is transcribed according to the DNA in the cell nucleus. tRNA is the recognizer of base sequences (i.e., genetic codons) on mRNA and the transporter of amino acids. rRNA is the component that makes up the ribosome and is the workplace of protein synthesis.
DNA is a polymer, DNA solution is a polymer solution with high viscosity and can be stained green by methyl green. DNA has an absorbing effect on ultraviolet light (260nm), and using this property, the content of DNA can be determined. When the nucleic acid is denatured, the absorbance increases, called the color-enhancing effect.
In contrast, other proteins can only bind specifically to specific deoxyribonucleic acid sequences. Most research on such proteins has focused on various transcription factors that can regulate transcriptional action. Each of these proteins can bind to a specific deoxyribonucleic acid sequence and thereby activate or repress the transcription of genes located in sequences near the promoter.
Transcription factors have two modes of action. The first can bind to the RNA polymerase responsible for transcription, either directly or through the action of other intermediary proteins, which in turn allows the polymerase to bind to the promoter and initiate transcription. The second one binds to the promoter with enzymes that specifically modify histone proteins, causing a change in the difficulty of contact between the deoxyribonucleic acid template and the polymerase.
Correct Answer
Here is the correct answer to Which of these is a difference between a DNA and an RNA molecule?
- DNA is usually double-stranded, whereas RNA is usually single-stranded.
DNA is usually double-stranded, whereas RNA is usually single-stranded is a difference between DNA and an RNA molecule.
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