ácidos nucléicos
TRANSCRIPT
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ÁCIDOS NUCLÉICOS
DUPLICAÇÃO DE DNA E SÍNTESE PROTÉICA
Profª Drª Elizabete Costa
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Como o DNA se duplica?
•Como toda atividade biológica, a duplicação do DNA se faz com a catalisação de enzima.
•É chamada de semi-conservativa, visto que a partir de uma fita molde já existente, a célula constrói uma fita nova, complementar a existente.
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Como o DNA se duplica?
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TRANSCRIÇÃO
1 RNA é sintetizado de modo complementar e com polaridade inversa ao filamento molde de DNA.
3´ 5´
5´
3´
Novos nucleotídeos são adicionados no sentido 5´→ 3´.
O filamento não-molde geralmente não é transcrito.
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TRADUÇÃO
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RELAÇÃO CÓDON - ANTICÓDON
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TRADUÇÃO
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TRANSCRIÇÃO E TRADUÇÃO
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Tradução
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