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3 Cards in this Set
- Front
- Back
- 3rd side (hint)
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DNA Structure |
●2 Long Anti-Parallel Chains joined together by complementary Base pair rule ●Double Helix ●Stable molecule-allows genetic info to be passed down without change ●Large molecule can carry large amounts of info ●Hydrogen bonds weak allows easy separation during replication and synthesis ●Strong phosphodiester bond protection the bases which forms the code in the centre |
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RNA Structure |
●Short polynucleotide chain 3 Types are: -mRNA:messenger RNA - transfer genetic info from DNA to ribosome -rRNA:ribosomal RNA - with proteins make up ribosome -tRNA:transfer RNA - transfers specific amino a to ribosomes for protein synthesis |
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SEMI-CONSERVATIVE REPLICATION |
●Double Helix untwisted when DNA HELICASE breaks hydrogen bonds between bases; allowing 2 strands to separate ●Both strands act as a template ●Free complementary bases pair up to exposed bases ●Phosphodiester covalent bond forms by condesation reaction between nucleotides to join sugar phosphate backbone using DNA POLYMERASE ●●NAME because 1 molecule consists of 1 conserved 'old' strand and 1 newly built strand |
When a cell divides (interphase) it needs to make identical copies to form sister chromatids |
