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  1. Intro to viruses (article) | Viruses | Khan Academy

    A virus is made up of a DNA or RNA genome inside a protein shell called a capsid. Some viruses have an external membrane envelope. Viruses are very diverse. They come in different shapes and …

  2. Khan Academy | Khan Academy

    Opa. Algo deu errado. Por favor, tente novamente. Ah não, parece que ocorreu um erro. Você precisa atualizar. Se o problema persistir, fale conosco.

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  4. The biology of Zika virus (article) | Khan Academy

    May 10, 2016 · Once Zika virus particles are in the human body, they must enter individual cells in order to replicate and make more viruses. Cell entry is possible because a Zika virus particle carries …

  5. Bacteriophages (article) | Viruses | Khan Academy

    A bacteriophage, or phage for short, is a virus that infects bacteria. Like other types of viruses, bacteriophages vary a lot in their shape and genetic material.

  6. Retroviruses (video) | Viruses | Khan Academy

    Viral mRNA is produced, translated into proteins, and assembled into new viruses that bud off with an envelope. Protease matures the viruses before they infect other cells.

  7. Introdução aos vírus (artigo) | Vírus | Khan Academy

    Os envelopes, no entanto, contêm proteínas que são especificadas pelo vírus, as quais, muitas vezes, ajudam as partículas virais a se ligarem às células hospedeiras.

  8. Virus structure and replication (video) | Khan Academy

    Some viruses also have an additional outer membrane, called an envelope. A typical viral infection cycle includes attachment to a host cell, entry of the virus’s genetic material, viral replication, self …

  9. Khan Academy | Khan Academy

    Introducción a los virus: estructura, replicación y su impacto en la biología.

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