Assignment Help - homework help

  Nitrogenous Bases

Nitrogenous Bases:

Two kinds of nitrogenous bases are initiated within all nucleic acids. These are derived of purine and pyrimidine.

i. Purine Bases:

Purine Bases are all derived from their parent compound purine that consists of a six membered pyrimidine ring fused to the 5 membered imidazole ring, the purine derivatives initiated in nucleic acids are adenine and guanine.

1291_purine bases.jpg

ii. Pyrimidine Bases:

Pyrimidine Bases are all derived from their parent heterocyclic compound pyrimidine. The general pyrimidine derivatives that are initiated in nucleic acids are Uracil, Thymine and Cytosine.

1613_pyrimidine bases.jpg


Minor bases in nucleic acid:

Except the above four bases, specific minor, unusual bases are as well found in DNA and RNA. They are 5 methylcytosine. Those are:

1. N4 acetyl cytosine
2. N6 methyladenine
3. N6
4. N6 dimethyladenine
5. Pseudouracil

Base Pairing:

Base pairing is a necessary characteristic not only to keep the double helical structure of DNA, but as well plays an significant role in DNA, RNA and protein biosynthesis.

In DNA:

Adenine (A) pairs with thymine (T)    (A=T)
Guanine (G) pairs with cytosine (C)    (G ≡ C)

In RNA:

Adenine (A) pairs with uracil (U)    (A=U)
Guanine (G) pairs with cytosine (C)    (G ≡ C)

2091_rna.jpg


Chargaffs rule of DNA composition:

DNA has equivalent number of adenine and thymine residues (A=T) and equivalent number of guanine and cytosine (G ≡ C) residues. This is termed as Chargaffs rule of molar equivalence among the purine and pyrimidines in DNA.

Structure of Nucleotides:

Nucleotides are the basic units of nucleic acids. Every nucleotide is having of a

  • Phosphate group
  • Pentose Sugar and
  • Nitrogenous base.

2459_nucleotides.jpg

 

Latest technology based Biology Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Nitrogenous Bases homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Nitrogenous Bases, project ideas and tutorials. We provide email based Nitrogenous Bases homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Nitrogenous Bases. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Nitrogenous Bases. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Home | Company Overview | Services | Discover Q&A | Sitemap | Contact Us | T & C | Refund Policy | Copyright Policy | Blog | Q&A | Directory

©TutorsGlobe All rights reserved 2022-2023.