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To understand what substances do not exist in RNA, it is important to first understand what substances ARE in RNA.
RNA, like DNA, is a polymer. It is made up of many repeating units of molecules, over and over again. RNA is a phosphosugar, meaning that it is primarily made up of molecules of phosphorus and sugars over and over again. In the case of RNA, the sugar in question is the "ribose" sugar. Ribose sugar in RNA is almost indistinguishable from its DNA counter part "deoxyribose" sugar. What separates ribose from deoxyribose, is the presence of an oxygen molecule on the sugar's second carbon, which deoxyribose lacks.
The phosphorus and the ribose alternate repeatedly, over and over to form the backbone of the RNA molecule. In addition to the backbone of RNA, 4 nitrogenous bases are attached to each of the ribose sugars on the backbone. These 4 bases are adenine, cytosine, guanine, and uracil. Particular importance is placed on the presence of uracil in RNA, because uracil also happens to be absent in DNA. Instead, DNA molecules use the base thymine. This too is a distinguishing factor between DNA and RNA.
In knowing this we can make the following important deductions as to what substances are NOT found in RNA:
1. Deoxyribose sugar is not found in RNA (only DNA)
2.Thymine is not found in RNA (only in DNA)
3. Essentially any substance that is not ribose sugar, phosphorus, or any of the RNA bases (A,G,C, and U), is not found traditionally, in RNA.
What else can I help you with?
Which neuclitides found in RNA not in DNA?
Uracil is a nucleotide found in RNA but not in DNA. In RNA, uracil replaces thymine, which is found in DNA.
What base is found DNA but not in RNA?
Thymine
Where in the nucleus is RNA found?
RNA is found in the nucleus in the form of messenger RNA (mRNA), which carries the genetic information from DNA to the ribosomes in the cytoplasm for protein synthesis. RNA is also found in the nucleus as transfer RNA (tRNA) and ribosomal RNA (rRNA) which are involved in protein synthesis within the cell.
Which monomer is not found in RNA?
An RNA monomer is a nucleotide.
Which is one of the bases found in RNA?
One of the bases found in RNA is uracil. Uracil pairs with adenine in RNA, just like thymine pairs with adenine in DNA.
Which substances found in RNA but not in DNA?
ribose.
What pair of substances can be found in a plant and animal?
DNA and RNA
What are the substances represented by the letters A and G called?
The nitrogenous substances A and G are purines (double rings).
Which neuclitides found in RNA not in DNA?
Uracil is a nucleotide found in RNA but not in DNA. In RNA, uracil replaces thymine, which is found in DNA.
What bases found in DNA but not in RNA?
Uracil is found in RNA but not in DNA.
Is ribose found in DNA or RNA?
Ribose is found in RNA, not DNA.
What are found in DNA and rna?
Deoxyribose is the sugar found in DNA. Ribose is the sugar found in RNA.
What base is found DNA but not in RNA?
Thymine
Where in the nucleus is RNA found?
RNA is found in the nucleus in the form of messenger RNA (mRNA), which carries the genetic information from DNA to the ribosomes in the cytoplasm for protein synthesis. RNA is also found in the nucleus as transfer RNA (tRNA) and ribosomal RNA (rRNA) which are involved in protein synthesis within the cell.
Is thymine found in both DNA and RNA?
Yes, thymine is found in DNA but not in RNA. In RNA, thymine is replaced by uracil.
Where are codons and anticpdpns found?
Codons are found on messenger RNA, while anticodons are found on transfer RNA
Which monomer is not found in RNA?
An RNA monomer is a nucleotide.
