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4258901
DNA Replication
Descrição
AS - Level Biology (2. Nucleic acids) Mapa Mental sobre DNA Replication, criado por phoebepowe em 29-12-2015.
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biology
alevel
alevels
nucleicacid
aqabiology
biology
2. nucleic acids
as - level
Mapa Mental por
phoebepowe
, atualizado more than 1 year ago
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Criado por
phoebepowe
mais de 8 anos atrás
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Resumo de Recurso
DNA Replication
Nuclear division - Is the process by which the nucleus divides. There are two types of nuclear division, mitosis and meiosis
Cytokiesis - Follows nuclear division and is the process by which the whole cell divides
Before the nucleus divides its DNA must be replicated
DNA helicase causes the two strands of DNA to separate by breaking hydrogen bonds.
The free nucleotides that have been activated bind specifically to their complementary bases.
Once the activated nucleotides are bound they are joined together by DNA polymerase, which makes phosphodiester bonds
Finally all the nucleotides joined to form a complete polynucleotide chain using DNA polymerase
Semi-conservative replication
The four types of nucleotide bases of adenine, guanine, cytosine or thymine must be present.
Both strands of DNA molecule act as a template for the attract
The enzyme DNA polymerase
A source of chemical energy is required to drive the process
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