Unit 2 Section 2.3 Protein Synthesis
- Created by: stephloupoole
- Created on: 23-04-14 19:27
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- Protein Synthesis
- Genes
- DNA contains genes. A gene is a sequence of DNA nucleotides that codes for a protein
- proteins are made from amino acids. different proteins have a different number and order of amino acids
- its the order of nucleotide bases in a gene that determines the order of amino acids in a particular protein
- each amino acid is coded for by a sequence of three bases in a gene. different sequences of bases code for different amino acids
- its the order of nucleotide bases in a gene that determines the order of amino acids in a particular protein
- proteins are made from amino acids. different proteins have a different number and order of amino acids
- DNA contains genes. A gene is a sequence of DNA nucleotides that codes for a protein
- Gene Mutations
- Mutations are changes in the base sequence of an organism's DNA. if the sequence of bases in a gene changes, the sequence of amino acids in the protein it codes for may also change
- This may affect the way the protein folds up and so its overall 3D shape. As a result, a different or non - functional protein could be produced
- Mutations are changes in the base sequence of an organism's DNA. if the sequence of bases in a gene changes, the sequence of amino acids in the protein it codes for may also change
- DNA, RNA and Protein Synthesis
- All the reactions and processes in living organisms need proteins. DNA carries the instructions t omake proteins so its obviously vital for protein synthesis. RNA plays a key role too
- DNA molecules are found in the nucleus of the cell.
- The organelles that assemble proteins are called RIBOSOMES - they're found in the cytoplasm DNA is too large to move out of the nucleus, so a section is copied into a molecule called mRNA.
- The mRNA leaves the nucleus and joins with a ribosome in the cytoplasm, where it can be used to synthesise a protein
- The organelles that assemble proteins are called RIBOSOMES - they're found in the cytoplasm DNA is too large to move out of the nucleus, so a section is copied into a molecule called mRNA.
- DNA molecules are found in the nucleus of the cell.
- All the reactions and processes in living organisms need proteins. DNA carries the instructions t omake proteins so its obviously vital for protein synthesis. RNA plays a key role too
- Genes
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