Nucleic Acids
Chapter Name : Biomolecules |
Sub Topic Code : 102_12_14_05_02 |
Topic Name : Nucleic Acids |
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Sub Topic Name : Structure Of Nucleic Acids |
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Introduction
1.A unit formed by the attachment of a base to 1? position of sugar is known as nucleoside. 2.In nucleosides, the sugar carbons are numbered as 1?, 2?, 3?, etc. in order to distinguish these from the bases. 3.When nucleoside is linked to phosphoric acid at 5?-position of sugar moiety, we get a nucleotide. 4. Nucleotides are joined together by phosphodiester linkage between 5? and 3? carbon atoms of the pentose sugar. 5.Information regarding the sequence of nucleotides in the chain of a nucleic acid is called its primary structure. 6.Nucleic acids have a secondary structure also. James Watson and Francis Crick gave a double strand helix structure for DNA
Pre-Requisites:
Elements, biomolecule
Activity:
DNA gives the unique code for every individual
Real Life Question:
Why are nucleic acids important?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Nucleic acids | Nucleic acids help to build DNA |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| DNA molecular model | Observe how nucleic acids make up a DNA double helix |
Real life uses :
DNA forms the genetic code
Places to visit :
chemistry lab
Practical examples around us
| Examples | Explainations |
|---|---|
| Human body | Different individuals have different DNA fingerprints |
What you learn in Theory:
1.A unit formed by the attachment of a base to 1? position of sugar is known as nucleoside. 2.In nucleosides, the sugar carbons are numbered as 1?, 2?, 3?, etc. in order to distinguish these from the bases. 3.When nucleoside is linked to phosphoric acid at 5?-position of sugar moiety, we get a nucleotide. 4. Nucleotides are joined together by phosphodiester linkage between 5? and 3? carbon atoms of the pentose sugar. 5.Information regarding the sequence of nucleotides in the chain of a nucleic acid is called its primary structure. 6.Nucleic acids have a secondary structure also. James Watson and Francis Crick gave a double strand helix structure for DNA
What you learn in Practice:
DNA forms the genetic code of the body.