This is a draft cheat sheet. It is a work in progress and is not finished yet.
DNA
DNA double helix structure allows it |
Stability |
Simple Replication pattern |
RNA
Ribonucleic Acids |
Transfer genetic information from DNA to the Ribsomes |
Ribsomes are bodies Protein Factories |
Read RNA to make Polypeptides (Proteins) |
GENES
A Gene is a sequence of DNA Bases |
Genes code for a Polypeptide or RNA |
Order of Bases in a Gene |
Determines order of Amino Acids In a Polypeptide |
One Gene - One Polypeptide
A given gene has a very precise linear sequence that codes for the linear sequence of amino acids in one polypeptide molecule |
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Glossary
Polypeptide |
When two or more amino acids join together |
Gene - Polypeptide
Base sequence of a DNA molecule |
Has a direct relationship to |
The Amino Acid Sequence |
Or Primary structure of a Polypeptide |
Note:
Primary structure determines higher order structure which determines biological activity |
Transcription
How RNA molecules are synthesized |
Uses DNA as a Template |
One DNA strand is the template for RNA |
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2 Strands are called |
Template Strand |
Non-Template Strand |
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RNA synthesized on template strand |
Successive addition of Complementary Base Pairs |
Only short regions corresponding to genes are copied into RNSA |
They comes to a end at a termination sequence |
Newly sythasised RNA leaves the DNA |
DNA Helix reforms |
Transcription Compete |
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Structure of RNA
Ribose Sugar |
Phosphate Group |
Base |
Bases are : A, U, C, G |
Note:
DNA makes RNA makes a Polypeptide |
Steps in the Information Flow
Transcription |
Translation |
of DNA makes RNA |
of RNA makes Polypeptides |
Transcription
The DNA base sequence is transcribed or copied |
This makes a RNA molecule |
RNA is a Intermediate |
Transcription
The DNA base sequence is transcribed or copied |
This makes a RNA molecule |
RNA is a Intermediate |
Transcription
The DNA base sequence is transcribed or copied |
This makes a RNA molecule |
RNA is a Intermediate |
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