Is it true that both DNA and RNA in living organisms are genetic material?

Wrong. Both DNA and RNA can carry genetic information and can be used as genetic material. But when DNA and RNA exist at the same time (as long as there is a cellular structure and most viruses), only DNA is genetic material.

The genetic material of a few viruses is RNA. In other words, only one of DNA and RNA is genetic material.

Both DNA and RNA can carry genetic information, so they can be considered genetic material. But when DNA and RNA exist at the same time, then DNA is the genetic material, and RNA only carries genetic information and plays a role in transmitting genetic information during gene expression.

At the high school level, this statement is false, the genetic material in an organism is dominated by DNA, unless the organism does not have DNA, such as some RNA viruses.

After learning deeply, this sentence is true. Most organisms use DNA as their genetic material, but some organisms use RNA as their genetic material, such as HIV. But no organism uses both DNA and RNA as its genetic material.

No, the genetic material in an organism is only one kind, and if there is only DNA in the organism, it can only be DNA; If there is only RNA, it can only be RNA; If there is both DNA and RNA, then the genetic material is just DNA.

There can only be one genetic material for the same organism, there will not be two, DNA or RNA, for example, RNA in the human body is not genetic material, DNA is. There is also the Nguyen virus, which is protein genetic material.

Right. The genetic material of cellular organisms is DNA, and the genetic material of viruses is DNA or RNA, because some RNA viruses have genetic material that is RNA.

Organisms with cellular structures have both DNA and RNA in their cells, but both use DNA as the genetic material, and organisms with non-cellular structures (such as viruses) contain DNA or RNA in their bodies, so the genetic material is DNA or RNA.

Although scientists on prions have begun to think that proteins may be genetic material, if there is one type of genetic material in the organism at the same time, not both.

The book says that DNA is the main genetic material, RNA is the genetic material....But there are exceptions, where the genetic material of prions is proteins.

Some viral genetic material is RNA, while others are basically DNA

See what kind of creature it is.

This statement is undoubtedly true.

RNA can serve as genetic material.

The genetic material of all cellular organisms is DNA and RNA exists as genetic material only in certain kinds of viral organisms. This type of virus is called an "RNA virus".

After this type of virus invades the cell, RNA will synthesize DNA through reverse transcription, and then guide the synthesis of various RNAs, and then synthesize various proteins.

DNA is the main genetic material, and the genetic material of some RNA viruses is RNA, which can play a transport function and also have a catalytic role.

RNA assists in the synthesis of proteins by DNA in eukaryotes, but in RNA viruses, RNA also acts as genetic material and directly controls protein synthesis.

When RNA exists independently, it is genetic material; When RNA and DNA are present at the same time, the genetic material of RNA is obscured and DNA acts as the genetic material. Moreover, the genetic material of cellular organisms is all DNA, and there are only a few of them.

In cells, RNA cannot be used as genetic material, but in some viruses, RNA can be used as genetic material.

The RNA of RNA viruses is the genetic material, and there are three types of biological RNAs in the cell structure: tRNA, mRNA, and RRNA, all of which are related to protein synthesis.

DNA is biological genetic material, while RNA is not. (loss wide) such as grasping.

a.That's right. b.Mistake.

Correct answer: B

Genetic information vectors in biological cells and some viruses and viroids.

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

In this process, transfer RNA (tRNA) carries amino acid residues corresponding to triplet codons and binds to the mRNA undergoing translation, and then ribosomal RNA (RRNA) links each amino acid residue into a peptide chain through peptide bonds to form protein molecules.

RNA is used as genetic material for SARS, HIV, tobacco mosaic virus, etc.

Ribonucleic acid, abbreviated as RNA, is a carrier of genetic information found in biological cells and some viruses and viroids. RNA is a long limb formed by the condensation of ribonucleotide sails by phosphodiester bonds. 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 which, uracil replaces T in DNA.

1 From the principle of base complementarity, the double helix DNA is more stable, although there is also a double helix in RNA, but the extra oxygen brings a new selection to the synthesis of long chains - RNA can form branched chains, but there is no need to use branched chains to increase the complexity of genetic information in evolution, which may be a form of elimination.

2. Reasoning from the structure and function, what kind of structure is what kind of function, the characteristics of genetic material are economical, flexible, efficient, and stable, which is the characteristic of DNA, RNA due to its huge variability, it is speculated that there existed a world of RNA before the world of proteins, that is, RNA can have multiple functions like proteins. Therefore, RNA is unstable and changeable, and it is not suitable for genetic material.

3 From an experimental point of view, RNA is easily hydrolyzed in vitro to produce 2',3'-cyclic phosphate, and the extra oxygen atoms at the 2' position cause chain instability.

There are also many viruses in which RNA is used as genetic material, and there is evidence that they have a strong vitality due to their high degree of variability. This is why HIV vaccines are difficult to develop. Billions of years from now, organisms will evolve RNA as the main genetic material.

So in the long run, it cannot be said that DNA is necessarily superior.

CTP, GTP, TTP, UTP exist, and there are a large number of them, the nucleic acid synthesis process is: NTP + long chain (N nucleotides) = NMP + long chain (N + 1 nucleotide), in addition to the second messenger camp, the precursor of CGMP is also A(G) TP, and the synthesis of starch cellulose also requires the participation of UTP. There are many examples, which can be found in university textbooks.

DNA is a double-stranded helix structure that is very stable, RNA is generally single-stranded, and is easily broken down by RNA enzymes.

One oxygen is missing, and the hydrogen on the other deoxyribose forms hydrogen bonds with it, and many form a double helix structure, which is more stable than RNA. I guess that's how it can be understood.

The lack of oxygen makes its structure more compact, that is, it is more stable than RNA, and it can be modified by some enzymes to ensure that it is not degraded, and it is more stable.

There is RNA in the human body, so there are also corresponding ribonucleotides.

Because RNA is easily broken down, DNA is more stable.

Many viruses do not have DNA and use RNA as the only carrier of genetic information.

Ribosomal RNA (ribosomalrna, RRNA) is a biological cell.

in the main ribonucleic acid.

One is a riboenzyme with catalytic ability, but it cannot function like other ribonucleic acids when it exists alone, and only works with a variety of ribosomal proteins to form ribosomes (a membrane-free organelle.

before it can perform its function.

RNA in nature is usually single-stranded, and the four most basic bases in RNA are A (adenine.

U (uracil), G (guanine.

C (cytosine), on the other hand, DNA that is the same nucleic acid as RNA is usually a double-stranded molecule and contains nitrogenous bases.

A (adenine), T (thymine.

There are four types: G (guanine) and C (cytosine).