Wednesday, November 6, 2013

DNA synthesis and snoopy!

Today, we took a quiz on DNA. Them we went over the three different steps in DNA synthesis. 

1.) DNA transcription 
- first polymerase unzips DNA to form mRNA 
- reads from 3'-5' 
 
2.) RNA processing 
- puts a cap made out of guanine and tail made out of adenine around the genetic material for protection from enzymes in cytoplasm 
- splice twosome cuts out introns( incised DNA) and puts back together exons 
- now can fit through nucleic membrane 

3.) translation 
- aminocyl tRNA synthitase bonds amino acid and tRNA together
- tRNA takes amino acid to ribosome 
- reads it 5'-3' 
- start codon always AUG 
- stop codon - UAG, UAA, UGA (split ribosome apart) 
- ribosome bonds the new amino acid to the polypeptide 
- tRNA exits 
- polypeptide forms protein 




Then we did the snork activity. We were given genes that we had to create the RNA for to determine what traits to draw. 


This is the end result : 



Then we also checked the Pglo lab and notice that only certain bacteria colonies glowed under the black light


^this shows the difference eternity the ones that glow and don't glow 

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