Nucleic Acids As Biology OCR
- Created by: Nita
- Created on: 19-11-12 19:33
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- Nucleic Acids
- RNA
- Polynucleotide
- Single Stranded
- Made up of nucleotides
- Adenine
- Uracil
- Guanine
- Cytosine
- DNA
- Made up of nucleotides
- Thymine
- Adenine
- Cytosine
- Guanine
- Double Stranded
- Polynucleotide
- Formation of DNA Molecule
- 2 types of nucleotide bases
- Purines
- Adenine
- Thymine
- 2 hydrogen bonds inbetween
- Thymine
- Guanine
- 3 hydrogen bonds inbetween
- Cytosine
- 3 hydrogen bonds inbetween
- Adenine
- Pyramidines
- Purines
- Adenine
- 2 hydrogen bonds inbetween
- 2 hydrogen bonds inbetween
- Guanine
- 3 hydrogen bonds inbetween
- Cytosine
- 3 hydrogen bonds inbetween
- Adenine
- Purines
- Purines
- Strands are antiparrales because they run in opposite directions
- Sugars are pointing in opposite directions
- Antipaarallel chains twist like rope ladder to form the final structure
- Double Helix Structure
- 2 types of nucleotide bases
- REPLICATION
- Double helix is untwisted
- Hydrogen bonds between the bases are broken
- DNA unzips to expose bases
- FREE DNA nucleotides are hydrogen bonded onto their exposed complimentary bases
- DNA POLYMERADE catalyses the formation of covalent bonds between the phosphate group of one molecule and the sugar of the next
- This continues all the way down until there are 2 identical DNA strands
- These are PROOF READ by DNA POLYMERASE to prevent any mistakes
- This continues all the way down until there are 2 identical DNA strands
- DNA POLYMERADE catalyses the formation of covalent bonds between the phosphate group of one molecule and the sugar of the next
- FREE DNA nucleotides are hydrogen bonded onto their exposed complimentary bases
- DNA unzips to expose bases
- Hydrogen bonds between the bases are broken
- Double helix is untwisted
- Made up of nucleotides
- GENE
- A SEQUENCE OF DNA NUCLEOTIDES
- CODES FOR A POLYPEPTIDE
- A SEQUENCE OF DNA NUCLEOTIDES
- PROTEIN SYNTHESIS
- The required gene can be exposed by splitting the hydrogen bonds that hold the double helix together in that region
- RNA NUCLEOTIDES form a complimentary strand
- mRNA ( a copy of the DNA coding strand)
- The mRNA peels away from the DNA and leaves the NUCLEUS throught the NUCLEUR PORES
- The mRNA then attaches to the ribosome
- the tRNA brings amino acids to the ribosome in the correct order according to the base sequence of the mRNA
- THE AMINO ACIDS ARE JOINED TOGETHER BY PEPTIDE BONDS
- TO GIVE A PROTEIN WITH A SPECIFIC TERTIARY STRUCTURE
- THE AMINO ACIDS ARE JOINED TOGETHER BY PEPTIDE BONDS
- the tRNA brings amino acids to the ribosome in the correct order according to the base sequence of the mRNA
- The mRNA then attaches to the ribosome
- The mRNA peels away from the DNA and leaves the NUCLEUS throught the NUCLEUR PORES
- mRNA ( a copy of the DNA coding strand)
- RNA NUCLEOTIDES form a complimentary strand
- The required gene can be exposed by splitting the hydrogen bonds that hold the double helix together in that region
- RNA
- DNA
- Made up of nucleotides
- Thymine
- Adenine
- Cytosine
- Guanine
- Double Stranded
- Polynucleotide
- Formation of DNA Molecule
- 2 types of nucleotide bases
- Pyramidines
- Pyramidines
- Strands are antiparrales because they run in opposite directions
- Sugars are pointing in opposite directions
- Antipaarallel chains twist like rope ladder to form the final structure
- Double Helix Structure
- 2 types of nucleotide bases
- REPLICATION
- Double helix is untwisted
- Hydrogen bonds between the bases are broken
- DNA unzips to expose bases
- FREE DNA nucleotides are hydrogen bonded onto their exposed complimentary bases
- DNA POLYMERADE catalyses the formation of covalent bonds between the phosphate group of one molecule and the sugar of the next
- This continues all the way down until there are 2 identical DNA strands
- These are PROOF READ by DNA POLYMERASE to prevent any mistakes
- This continues all the way down until there are 2 identical DNA strands
- DNA POLYMERADE catalyses the formation of covalent bonds between the phosphate group of one molecule and the sugar of the next
- FREE DNA nucleotides are hydrogen bonded onto their exposed complimentary bases
- DNA unzips to expose bases
- Hydrogen bonds between the bases are broken
- Double helix is untwisted
- Made up of nucleotides
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