Murphy Crosby's Biology Project
 For educational purposes only.
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DNA




What is DNA?
-DNA is a macromolecule made of monomers called nucleotides.A DNA molecule resembles a twisted ladder. A sugar-phosphate backbone forms the sides of the ladder. The phosphate group of one nucleotide is covalently bonded to a hydoxyl group on the sugar of the next. Hydrogen bonding between bases creates the rungs of the ladder. Each strand has a free phosphate group at the 5' end and a free hydroxyl group at the 3' end. The numbers refer to the carbons in the sugar part of each nucleotide.



Transcription - The first stage of gene expression in which the RNA polymerase enzyme synthesizes an mRNA molecule whose sequence is complementary to the DNA.
Translation - The second stage of gene expression in which a ribosome assembles a polypeptide, using the mRNA to specify the amino acids.

DNA GAME
DNA
Sequence 		5'
3'
_
 3'
T
A
C
A
A
T
G
G
C
T
A
G
A
T
C
 5'

Find the RNA
*Remember the base Uracil replaces Thymine in RNA
RNA
Sequence		 5'
3'
_
 3'
A
U
G
U
U
A
C
C
G
A
U
C
U
A
G
 5'

Protein
Start-Leucine-Proline-Isoleucine-Stop