Nucleic Acids
Chapter Name : Biomolecules |
Sub Topic Code : 102_12_14_05_01 |
Topic Name : Nucleic Acids |
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Sub Topic Name : Chemical Composition Of Nucleic Acids |
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Introduction
1.The nucleus of a living cell is responsible for this transmission of inherent characters, also called heredity. 2.The particles in nucleus of the cell, responsible for heredity, are called chromosomes which are made up of proteins and another type of bio-molecules called nucleic acids. 3.These are mainly of two types, the deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). 4.Since nucleic acids are long chain polymers of nucleotides, so they are also called polynucleotides. 5.Complete hydrolysis of DNA (or RNA) gives a pentose sugar, phosphoric acid and nitrogen bases. 6.In DNA molecules, the sugar moiety is ?-D-2-deoxyribose 7.In RNA molecule, it is ?-D-ribose. 8.DNA contains four bases viz. adenine (A), guanine (G), cytosine (C) and thymine (T). 9.RNA also contains four bases, the first three bases are same as in DNA but the fourth one is uracil (U).
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.The nucleus of a living cell is responsible for this transmission of inherent characters, also called heredity. 2.The particles in nucleus of the cell, responsible for heredity, are called chromosomes which are made up of proteins and another type of bio-molecules called nucleic acids. 3.These are mainly of two types, the deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). 4.Since nucleic acids are long chain polymers of nucleotides, so they are also called polynucleotides. 5.Complete hydrolysis of DNA (or RNA) gives a pentose sugar, phosphoric acid and nitrogen bases. 6.In DNA molecules, the sugar moiety is ?-D-2-deoxyribose 7.In RNA molecule, it is ?-D-ribose. 8.DNA contains four bases viz. adenine (A), guanine (G), cytosine (C) and thymine (T). 9.RNA also contains four bases, the first three bases are same as in DNA but the fourth one is uracil (U).
What you learn in Practice:
DNA forms the genetic code of the body.