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DNA Techniques Post questions and discuss DNA techniques and protocols such as DNA extraction, PCR, and the study of DNA-binding proteins.


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do tell something about plasmids, DNA and...

DNA Techniques

Post questions and discuss DNA techniques and protocols such as DNA extraction, PCR, and the study of DNA-binding proteins.



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  #1 (permalink)  
Old 03-25-2007, 04:43 PM
Pipette Filler
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Default do tell something about plasmids, DNA and...

...chromosomes? its deals with biotechnology, n i wanted to know about bacterial cell appearance. n wat dis thing basically is? pliz do help
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  #2 (permalink)  
Old 03-25-2007, 04:54 PM
Pipette Filler
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The nucleus contains chromosomes, which r visible as rod-shaped structures only when the cell is about to divide.
Chromosome contain information necessary for inheritance of features from parents to next generations.
DNA molecules contain information necessary for constructing & organising cells.
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Old 03-25-2007, 06:30 PM
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Plasmids are little molecules of genetical material(DNA/RNA)
Every single cell u have, has it's own dna or rna(depends on the kind of cell) that consists of chromosomes...
DNA is made of of simple units called nucleotides, which are held together by a backbone made of sugars and phosphate groups. This backbone carries four types of molecules called bases, and it is the sequence of these four bases that encodes information.

its major fuction is to create proteins usin the information it has...

A chromosome is a single large macromolecule of DNA, and constitutes a physically organized form of DNA in a cell. It is a very long, continuous piece of DNA (a single DNA molecule)..

bacterial cell appearence...
mmmm
they can spherical, called cocci,or rod-shaped, called bacilli,some rod-shaped bacteria, called vibrio, are slightly curved or comma-shaped; others, can be spiral-shaped, called spirilla, or tightly coiled, called spirochetes. A small number of species even have tetrahedral or cuboidal shapes......



thats all...


if you get to kno them you will like them...
hope i helped you....


konna xxx
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Old 03-25-2007, 07:00 PM
Pipette Filler
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Plasmids are small circles of DNA usually with one of two genes often conferring antibiotic resistance on any cell that is is transferred into.

DNA (Deoxyribo-Nucleic Acid) is the molecule that makes all living organisms what they are. All living things have DNA, viruses are not living and have either DNA or RNA (Ribo-Nucleic Acid) as their genetic material.

Chromosomes only occur in Eukaryotes not in true bacteria (Eubacteria) which are Prokaryotes.

They only appear at certain times of a cells life, normally during cell division. They contain all the DNa of the organism. When a DNA is identified and it's location given, it's identified by a number of factors but the first is which chromsome it's on (humans have 23 pairs of chromosomes plus the sex chromsomes).
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Old 04-22-2007, 06:23 PM
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Default Re: do tell something about plasmids, DNA and...

so, what is the purpose of adding DNA to the cell ?
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