Are phosphate groups purine or pyrimidine?
Attached to the ring is the phosphate group, which is a phosphorous atom with 4 covalently attached oxygen atoms. Nucleotides also have either a pyrimidine or purine base, attached to the pentose sugar. Pyrimidines are planar, six-membered rings of 5 carbon and 1 nitrogen atom.
Are pyrimidines in RNA?
Pyrimidine is one of two classes of heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA: in DNA the pyrimidines are cytosine and thymine, in RNA uracil replaces thymine. It is a member of pyrimidines and a diazine.
Is there a phosphate group in RNA?
Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. The nitrogen bases A and T (or U in RNA) always go together and C and G always go together, forming the 5′-3′ phosphodiester linkage found in the nucleic acid molecules.
Which pyrimidine is found in RNA?
Pyrimidines. Cytosine is found in both DNA and RNA. Uracil is found only in RNA. Thymine is normally found in DNA.
Is deoxyribose a pyrimidine?
The purines are adenine (A) and guanine (G) while the pyrimidines are cytosine and thymine in DNA. In RNA, the pyrimidines are cytosine (C) and uracil (U). The result is deoxyribose, the base of DNA.
Is pyrimidine a functional group?
Pyrimidines are simple aromatic compounds composed of carbon and nitrogen atoms in a six-membered ring. The pyrimidine nitrogenous bases are derived from the organic compound pyrimidine through the addition of various functional groups.
Which molecules are pyrimidines?
Adenine (A) and guanine (G) are purines, and cytosine (C), thymine (T), and uracil (U) are pyrimidines. These are the most important parts in the nucleic acid, and genetic information is stored in the sequence of these molecules.
Where are phosphate groups found?
When it is attached to a molecule containing carbon, it is called a phosphate group. It is found in the genetic material DNA and RNA, and is also in molecules such as adenosine triphosphate (ATP) that provide energy to cells. Phosphates can form phospholipids, which make up the cell membrane.
Which of these is are pyrimidines?
Are there any pyrimidines in both DNA and RNA?
There are three main types of pyrimidines, however only one of them exists in both DNA and RNA: Cytosine. The other two are Uracil, which is RNA exclusive, and Thymine, which is DNA exclusive. One strategy that may help you remember this is to think of pyrimid ines like pyramids that have sharp and pointy tops.
What makes up the nucleotides of RNA and DNA?
Nucleotides, the monomer units of RNA and DNA, consist of a pentose sugar, either ribose in RNA or deoxyribose in DNA, a phosphate group, and a nitrogenous base. As the name implies, a pentose is a 5-membered, puckered ring. Attached to the ring is the phosphate group, which is a phosphorous atom with 4 covalently attached oxygen atoms.
What happens when pyrimidines and purines bond?
If the purines in DNA strands bonded to each other instead of to the pyrimidines, they would be so wide that the pyrimidines would not be able to reach other pyrimidines or purines on the other side! The space between them would be so large that the DNA strand would not be able to be held together.
What’s the difference between pyrimidines and adenine?
E. The purines, adenine and cytosine, are large with two rings, while the pyrimidines, thymine and uracil, are small with one ring. Answers and Explanations: Question 1: The correct choice is F: both B and D. Cytosine and Thymine are both used to produce DNA.