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Virus

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resumes acerca de virus y su ciclo reproductivo

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MICROBIOLOGIA GENERAL
VIRUS
Los virus se reproducen por replicación viral. Los virus carecen
de metabolismo y se comportan como partículas inertes en
medios inanimados, pero dentro de las células susceptibles, el
ácido nucleico viral emplea los mecanismos de biosíntesis celular
para replicarse e inducir la síntesis de proteínas específicas que
posteriormente se integrarán al genoma replicado para originar
nuevos organismos, los cuales se liberarán de la célula huésped
para luego infectar otras células.
Los virus en las células tienen un objetivo básico: producir copias
de sí mismos en gran cantidad sirviéndose de la maquinaria que
tiene una célula viva para los procesos de transcripción,
traducción y replicación. El ciclo reproductivo de los virus varía
considerablemente entre las especies, pero siempre están
presentes seis etapas básicas:




Ciclo reproductivo de los virus
Ciclo reproductivo genérico de los virus.
1-Adsorción, 2-Penetración, 3-Desnudamiento, 4- Multiplicación
(4a- transcripción, 4b-traducción, 4c-replicación), 5- Ensamblaje,
6-Liberación.

Adsorción: Es la unión entre la cápside viral de proteínas y los
receptores específicos en la superficie celular del huésped.
La unión virus-célula es bastante específica y determina la
gama de huéspedes de un virus. Este mecanismo ha

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Uploaded on
February 26, 2024
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