Structure and Function of DNA. DNA Replication and Protein Synthesis . DNA Structure . Double Helix in Shape- two stands wound around one another. Composed of subunits called nucleotides Parts of a Nucleotide 5 Carbon Sugar- Deoxyribose Phosphate Group Nitrogen Base (4 Flavors)
DNA Replication and Protein Synthesis
DNA stores all of the genetic information for the cell.
If it located in the nucleus but can also be found in the mitochondria and the chloroplast.
Serves as the blueprint for making proteins.
1. CTC GGG ATA CTG GGG CGT
2. ATG GCG CGT CGT CAT TAC
3. GTG CGT CAT CCC AAA TTT
4. TAC CAT ATC GTA CGT GTA
5. AAT TTA TAT CTC GTG CCC
Occurs in the nucleus
When the cell needs a protein is transcribes a certain part of DNA into RNA.
RNA is then the directions to make the proteins.
1. TAC GGC TAT ATC CTG CGC TAT ACG ATT
2. TAC CCG GAT CCG TTC ATA CGT ACT ATC
3. TAC GTA AAA AGT GGG CCC TAT GAT ATT
4. TAC GTA CGT CAT GAT TAG AGT TCT ATC
5. TAC GTA CTA GTA CCC GTA ATA AGA ATC
RNA is read in sets of 3 bases called codons.
Each codon CODES for a specific amino acid.
Start Codon –AUG
Stop Codons- UAA, UAG, UGA
Making proteins from the mRNA code.
mRNA leaves the nucleus and moves to the cytoplasm.
Goes to the ribosome where it is read is sets of 3 bases called a CODON.
tRNA picks up amino acids needed to make specific proteins
Once at the ribosome, the amino acids brought by the tRNA are bonded together by peptide bonds.
Bonded by peptide bonds.
MAKES A PROTEIN.
Transcribe and Translate the following sequences.
DNA- TAC GGT ACT TAG AGA TTT AAA ATT
2. DNA- TAC GTG GGG TTT ACT TCA CAT TTC GAG