Regarding DNA and RNA experiments, do organisms with DNA necessarily have RNA?

First of all, I am a science student in this year's college entrance examination... Just a personal opinion ...

First of all, see if there are T nucleotides The DNA decomposition enzyme above can decompose the tripentaphosphate dilipide bond, DNA and RNA are both, so they will be decomposed, if there is T, it is RNA, otherwise it is DNA

In judging whether the number of nucleotides is g=c, a=U (RNA's is A=T), if it is satisfied, it is double-stranded... Thank you FYI... Don't blame me for saying something wrong, I just learned so much from high school books, and I can't help it.

1. Decomposed by DNA enzymes, what can be decomposed is DNA, and vice versa

2. In general, DNA double-stranded RNA single strand, and then according to the first step, it can be judged.

Pyroxamine for RNA and methyl green or diphenylamine (heated) for DNA

Due to the different affinities of DNA and RNA for dyes, these two dyes are selective for the two types of nucleic acids. DNA is dyed green by methyl green, RNA is dyed red by pyrox red, single strands and double strands can be identified by absorbance value, if it is a double strand, it will be denatured after heating, the absorbance value will increase, and the single strand will not change, the principle is the color enhancement effect of DNA.

Isn't it in high school textbooks?

Organisms containing DNA must contain RNA A, organisms containing RNA do not necessarily contain DNA, such as RNA viruses, A is wrong; b. Organisms containing DNA do not necessarily contain RNA, such as DNA viruses, B is wrong; c. DNA-containing organelles.

There are mitochondria and chloroplasts.

Both of these organelles also contain RNA, C correct; D. Living cells containing DNA must contain RNA, D is wrong, so C

For cellular organisms, there must be RNA if there is DNA, and for viruses, there is only one nucleic acid, which either contains DNA or contains RNA.

The main differences between DNA and RNA are:

1. The composition unit is different: the composition unit of DNA is deoxynucleotide, and the composition unit of RNA is ribonucleotide, 2. The composition base is different: the composition base of DNA is ATGC, and the composition base of RNA is AUGC

3. The composition of five-carbon sugars is different: the composition of DNA is deoxyribose, and the composition of RNA is ribose, 4. The spatial structure is different: DNA is a double helix structure, and RNA is generally single-stranded.

5. Different functions: DNA is genetic material, and RNA is generally not used as genetic material in cells.

The distribution is different (DNA is mainly in the nucleus, RNA is mainly in the cytoplasm), the bases contained are different (DNA is unique to thymine T, RAN is unique to uracil U), five-carbon sugar is different (DNA is deoxyribose, RNA is ribose), and the structure is different (DNA is a double helix, RNA is a single strand).

Definition: The material that transmits genetic information between parents and offspring.

Chemical nature: Except for some viruses whose genetic material is RNA and prions, which are proteins, the genetic material of the rest of the viruses and all organisms with typical cellular structures is DNA.

Site of presence: This substance is the main component of chromosomes. It is also found in organelles like plastids, mitochondria, etc., outside the nucleus.

Basic characteristics: Relative stability, self-replication, precursor maintain a certain degree of continuity and produce heritable variation.

Conclusion: The genetic material of the vast majority of organisms (cellular structure organisms and DNA viruses) is DNA, so DNA is the main genetic material.

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.