F212 - Nucleic Acids

katy stopforth
Mind Map by katy stopforth, updated more than 1 year ago
katy stopforth
Created by katy stopforth over 5 years ago
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F212 - Nucleic Acids

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F212 - Nucleic Acids
1 DNA
1.1 double stranded
1.2 Nitrogenous Bases
1.2.1 Adenine
1.2.2 Thymine
1.2.3 Cytosine
1.2.4 Guanine
1.3 a polynuleotide
1.4 Semi-Conservative Replication
1.4.1 1. DNA unwinds
1.4.2 2. DNA helicase unzips the DNA
1.4.2.1 breaks the hydrogen bonds
1.4.2.2 forms two separate strands
1.4.2.2.1 act as templates
1.4.3 3. Free DNA nucleotides join to the bases
1.4.3.1 complementary base pairing
1.4.3.1.1 purine to pyramidine
1.4.4 4. DNA polymerase joins the new nuelotides by strong covalent bonds
1.4.4.1 forming sugar-phosphate backbone
1.4.5 5. winding enzyme reforms double helix structure
1.5
2 RNA
2.1 Nitrogenous Bases
2.1.1 Adenine
2.1.2 Uracil
2.1.3 Cytosine
2.1.4 Guanine
2.2 a polynucleotide
2.3 single stranded
2.4
3 Nitrogenous Bases
3.1 Pyramidines
3.1.1 Thymine
3.1.2 Cytosine
3.1.3 Uracil
3.2 Purines
3.2.1 Adenine
3.2.2 Guanine
3.3 Combinations
3.3.1 A,T or A,U
3.3.1.1 two hydrogen bonds
3.3.2 G,C
3.3.2.1 three hydrogen bonds
3.3.3 anti-parallel strands
3.3.3.1 in DNA - the strand twist to from a 'double helix'
4 Genes
4.1 a sequence of DNA nucleotides that codes for a polypeptide
5 Role of DNA and RNA
5.1 1. required gene exposed by splitting hydrogen bonds in that section of the DNA
5.2 2. RNA created a complementary strand
5.2.1 mRNA
5.3 3. mRNA leaves nucleis through nuclear pore and attaches to ribosome
5.4 4. tRNA brings amino acids to the ribosome in the correct order
5.4.1 according to base sequence
5.5 5. amino acids joined together by peptide bonds
5.5.1 gives a protein with a specific tertiary structure
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