Nucleosids
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This document discusses nucleic acids and compares DNA and RNA. It notes that nucleic acids are composed of nucleotides, which consist of a nucleoside (a nitrogenous base attached to a pentose sugar) bonded to a phosphate group. There are two types of nucleic acids: DNA contains the sugars deoxyribose and bases adenine, guanine, cytosine, and thymine, and is found in the nucleus where it directs synthesis of RNA via transcription. RNA contains the sugar ribose and bases adenine, guanine, cytosine, and uracil instead of thymine, and is found in the cytoplasm where it directs protein synthesis via translation. Purine bases have two rings while pyrimidine bases
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12.2NUCLEOTIDES & NUCLEIC ACIDS-1.pptx
Nucleotides are the building blocks of nucleic acids DNA and RNA. They consist of a nitrogenous base, a pentose sugar, and a phosphate group. Nucleotides bond together via phosphodiester bonds to form nucleic acid polymers. DNA contains the pentose deoxyribose and the bases adenine, guanine, cytosine, and thymine. RNA contains the pentose ribose and replaces thymine with uracil. Both DNA and RNA form double helical structures and store genetic information, with DNA involved in storage and replication and RNA involved in protein synthesis.
Nucleotide by KK Sahu sir
Introduction
Defination
Nitrogenous Bases
Components of nucleotide
Structure of nucleotide
Synthesis of nucleotide
Function
Length unit
Importance of nucleotide sequence
Biological significanc
Recent research
Conclusion
References
NUCLEOTIDES.pptx
This document discusses nucleic acids and their structure. It begins by introducing the central dogma of molecular biology and the three main classes of biopolymers - DNA, RNA, and proteins. It then explains that DNA and RNA are nucleic acids composed of nucleotides, which consist of a nitrogenous base, a 5-carbon sugar (ribose in RNA and deoxyribose in DNA), and phosphate groups. The primary structure of nucleic acids is the specific sequence of these nucleotides. DNA contains the bases adenine, guanine, cytosine, and thymine, while RNA contains adenine, guanine, cytosine, and uracil instead of thymine.
Nucleic acids 1
The document discusses the history and structure of nucleic acids. It describes how Friedrich Miescher first isolated nuclein in 1869 and how the tetranucleotide hypothesis proposed nucleic acids contained one of each nucleotide connected by phosphodiester linkages. Later, Avery, MacLeod and McCarty showed DNA could transform cells, supporting it as the molecule of heredity. Watson and Crick finally determined DNA's double helix structure in 1953. There are two main types of nucleic acids, DNA and RNA, which have similar structures but RNA contains uracil instead of thymine and has a 2' hydroxyl group.
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Nucleosids
- 1. MADE BY ZULAIKHA SAEED BS 5th BIO CHEMISTRY SBK WOMEN’s UNIVERSTY
- 2. NUCLEIC ACID Chemical composition Elements C,H,O,N and P There are two types of nucleic acids DNA (Deoxyribo nucleic acid) RNA (Ribo nucleic acid)
- 3. COMPARISION OF DNA & RNA DNA RNA Abbreviation of Deoxyribo nucleic acid Present in nucleus Synthesis RNA by Transcription process Abbreviation of Ribo nucleic acid Present in Cytoplasm Synthesis protein by Translation process
- 4. COMPOSITION OF NUCLEIC ACID • Basically the nucleic acids are composed of Nucleotides.
- 5. COMPOSITION OF NUCLEIOTIDES When one phosphate group is attached to a Nucleoside then it is called Nucleotide.
- 6. NUCLEIOSIDE A nitrogenous base is attached to pentose sugure is called a Nucleoside.
- 7. NITROGENOUS BASES A- Adenine (2 Ring =Purine base) G- Guanine C- Cytosine (1 ring = Pyrimidine base) T- Thymine U – Uracil
- 9. Naming of nucleosides IN The naming of pyrimidines the suffix “osine” is used •Suffix “idine” is used for purines BASE SUGAR NUCLEOSI DES Adenine + Ribose Adenosine Guanine + Ribose Guanosine Cytosine + Ribose Cytidine Thymine + Ribose Thymidine Uracil + Ribose Uridine
- 11. NUCLEIOSIDES IN PURINES Adenosine Guanosine
- 14. THANK YOU
Editor's Notes
- THIS was all about nuclisides