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Damping
 
Darwin, Charles R.
 
David Chalmers
 
David Marr
 
Declarative knowledge
 
Declarative Memory
 
DeMorgan, Augustus
 
Dendrite
 
Dendritic Pathfinding
 
Deoxyribonucleic Acid
 
Depression
 
Diaconis, Persi
 
Diatomic
 
Differential Inhibition
 
DNA
 
Donald Hebb
 
Dynamic Connection
 



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Dominic John Repici
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DNA

 
Deoxyribonucleic Acid - The molecule holding the design information used to construct components (proteins and enzymes) of biological (living) systems.


DNA Dogma

Contrary to widely taught and popularly held belief, DNA is not a self-replicating molecule.


DNA Structure

DNA stores information as a code made up of four chemical bases:

         A: Adenine
         T: Thymine

         G: Guanine
         C: Cytosine

These always pair up into only two possible pairs of bases:

         AT: Adenine with Thymine, and
         CG: Cytosine with Guanine

Each base (A, T, C, or G) of a DNA molecule is combined with a phosphate group and a sugar molecule. This configuration of base, phosphate, and sugar molecule is called a nucleotide. Individual nucleotides are arranged in long strands, which match up with their complimentary strand (the nucleotides containing the sequence of bases that pair up with the bases on the first strand) to form a double-helix.





Molecular machines read specific instruction-sequences from the DNA strand (transcription). These transcribed instruction-sequences are copied to, and conveyed in mRNA. They are used as blueprints to build proteins, which are the three-dimensional components used to produce all biological matter.

The three-dimensional assemblies of proteins are constructed from the 20 amino-acids by a set of intracellular molecular machines, which follow the instructions encoded and copied into mRNA from sub-sections of DNA.

Also: RNA     Nucleotide    

 
 




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