the functions of nucleic acids


A level Biology Mind Map on the functions of nucleic acids, created by freya hinks on 04/11/2017.
freya hinks
Mind Map by freya hinks, updated more than 1 year ago
freya hinks
Created by freya hinks over 7 years ago

Resource summary

the functions of nucleic acids
  1. storage
    1. double helix
      1. prokaryotes
        1. liner DNA that exists as chromosomes
          1. long DNA
            1. wrapped around histones
              1. triplets / codons
              2. eukaryotes
                1. circular chromosome
                  1. short DNA
                    1. supercoiled to fit in cell
                2. ribonucleic acid
                  1. protein synthesis
                    1. 1st stage, transcription
                      1. mRNA
                        1. a complementary copy of DNA strand
                          1. carries the genetic code from DNA to the ribosomes to make a protein
                            1. made during transcription by RNA polymerase
                            2. eukaryotes copy introns and exons / pre mRNA
                              1. splicing then occurs in the nucleus producing mRNA
                              2. prokaryotes copy all DNA
                              3. 2nd stage, translation
                                1. tRNA
                                  1. has an amino acid binding site on it
                                    1. has an anticodon thats complementary to the first codon
                                      1. it carries the amino acids used to produce the protein
                                        1. in a clover shape
                                    2. single stranded
                                      1. phosphate group, pentose sugar and 4 base pairs
                                        1. adenine (A), uracil (U), cytosine (C), guanine (G)
                                          1. adenine (A), thymine (T), cytosine (C), guanine (G)
                                            1. complementary base pairing, A and T, C and G
                                          2. deoxyribonucleic acid
                                              1. double stranded
                                              2. amino acids
                                                1. universal
                                                  1. the same triplets code for the same amino acids in all living organisms
                                                  2. degenerate
                                                    1. some amino acids are coded for by more than one base triplet
                                                    2. non overlapping
                                                      1. one triplet produces one amino acid
                                                        1. read in sequence
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