What is the role of RNA when there is DNA in the cell?

DNA is the main genetic material of organisms (some viruses are RNA or proteins), mostly existing in the nucleus (some mitochondria, chloroplast DNA), RNA has three categories, namely messenger RNA (mRNA), ribosomal RNA (RRNA) and transport RNA (tRNA), in the nucleus, with the unchained DNA as a template, the messenger RNA is synthesized, and then the transport RNA is transported out of the nucleus, and polypeptides are synthesized on the ribosomal RNA outside the nucleus, Functional proteins are formed by folding, etc.

Therefore, the suggestion that DNA and RNA can carry genetic material at the same time is not very scientific.

RNA controls protein synthesis, and DNA feeds genetic information back to mRNA in the form of codons, which translates it into protein. Second, RNA itself can act as an enzyme; Then there is the fact that RNA regulates DNA synthesis (e.g., primers).

Both DNA and RNA carry genetic material, DNA is present in the nucleus and is very stable, while messenger RNA is only synthesized when genes are expressed and used to synthesize proteins. The uniqueness of DNA determines the uniqueness of RNA, which in turn determines the uniqueness of the protein synthesized.

DNA can carry genetic material, RNA: Messenger: carries genetic information from DNA molecules into the cytoplasm to directly control protein synthesis; Transport: plays the role of transporting amino acids in the process of protein synthesis; It is a constituent substance of ribosomes.

Whether it is in the study of biology or in the study of biology, I believe everyone is very familiar with the terms DNA and RNA. In the discipline of biology, we often refer to DNA as DNA and RNA as RNA. Judging from the full names of DNA and RNA, both are nucleic acids, and the difference is mainly in the word deoxygenation.

But in fact, the difference between DNA and RNA is obvious. First of all, from the structural point of view, DNA is a double-stranded structure, while RNA is a single-stranded structure, so in essence, the structure of DNA and RNA is different.

1. The difference between DNA and RNAIn addition to the structure, DNA and RNA also have different functions. Because we say that different structures determine their own special functions. First of all, the function of DNA is to store the genetic material that humans need.

And the function of RNA changes with the type of RNA. Because RNA can be divided into messenger RNA, ribose RNA, and transport RNA. These three RNAs have different functions and play their respective roles in the DNA replication process.

Therefore, it can be said that there is a certain difference in function between DNA and RNA.

Second, the role of DNA and RNAHont the role of DNA and RNA, we can see from their function introduction, the main role of DNA is to store the genetic information needed by humans and animals, and RNA plays a role in assisting in the processing of DNA replication in humans or other animals. But both DNA and RNA have a common function, which is that they can both store genetic information and pass it on to the next generation. The only difference is that only ribose RNA in RNA has the function of storing genetic information.

Third, the review has some differences and roles between DNA and RNA, we can refer to the biology textbooks in middle school, which can give us a more comprehensive understanding.

DNA is called deoxyribonucleic acid, RNA is called ribonucleic acid, and their structure and function are different. Their functions are: DNA is mainly used to store the genetic information needed by humans and animals, while RNA plays a role in assisting in the processing of DNA replication in humans or other animals.

DNA is deoxyribonucleic acid and RNA is ribonucleic acid. DNA function is a carrier and transmitter of genes. RNA function is a faithful orderly in the process of gene expression, three types of RNA, which perform messenger transport and ribosomal structure RNA

The full name of DNA is deoxyribonucleic acid, and RNA is ribonucleic acid throughout the whole process. In terms of chemical structure, the five carbon sugars are deoxyribose and ribose. Functionally, DNA is the genetic material of almost all living things, while RNA only serves as the genetic material of a small number of organisms such as RNA viruses.

From the base pair, DNA corresponds to adenine, guanine, cytosine and thymine, that is, it corresponds to adenine, guanine, cytosine and uracil, that is, AGCUFrom a structural point of view, DNA is generally arranged in a double helix structure and is relatively stable, while RNA is single-stranded unstable. Both exist as genetic material, but RNA exists as an accessory function and breaks down soon after completing the task.

One. Essentially, the unit of DNA is deoxynucleotide.

1.Deoxynucleotides are made up of bases, deoxyribose, and phosphoric acid.

2.The bases include adenine (A), guanine (G), thymine (T), and cytosine (C), where A-T, C-G.

It is a double helix structure.

It's the genetic material.

It is mainly distributed in the nucleus.

Two. The unit of RNA is ribonucleotide.

1.Ribonucleotides include phosphoric acid, ribose sugar, and bases.

2.There are 4 main bases, adenine (A), guanine (G), cytosine (C), uracil (U), of which A-U, G-C.

It is a single-stranded structure.

It is divided into transporter RNA (tRNA, which is the recognizer of the base sequence on the mRNA and transporter of amino acids), ribosomal RNA (RNA, which is a component of the ribosome), and letter RNA (mRNA, a template for the synthesis of proteins).

5.RNA is mainly distributed in the cytoplasm.

There are two cases:

1. This kind of organism is an organism with RNA as the genetic material, RNA is born with genetic material, and DNA is RNA synthesized by reverse transcription, although reverse transcribed DNA and things can transcribe RNA, but those initial RNAs must be the result of RNA self-replication.

2. Organisms with DNA as genetic material, DNA as genetic material, all the information of organisms comes from DNA, and RNA is naturally among them, regardless of whether the RNA is rrna, tRNA, mRNA

1. DNA and RNA both belong to nucleic acids.

2. RNA is a single strand formed by transcription based on the principle of base complementarity and pairing, and its main function is to realize the expression of genetic information on proteins, and is a bridge in the process of transformation of genetic information to phenotype.

3. RNA is condensed by ribonucleotides by phosphoester bonds to grow into a chain-like molecule. A ribonucleotide molecule is made up of phosphoric acid, ribose sugar, and bases. There are 4 main bases of RNA, namely A adenine, G guanine, C cytosine, and Uracil.

Among them, Uracil replaces T thymine in DNA and becomes the characteristic base of RNA.

The full name of DNA is deoxyribonucleic acid, the full name of RNA is ribonucleic acid, nucleic acid is the genetic material of living organisms, and the basic unit is nucleotides.

There are two types of nucleic acids, namely deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

DNA is the main component of chromosomes, mainly in the nucleus, but also in mitochondria and chloroplasts.

RNA is mostly found in the cytoplasm.

The sequences of DNA and RNA are different for different organisms.

Transcription is the process of synthesizing RNA using DNA as a template in both prokaryotic and eukaryotic cells.