National academy of sciences bacteriophage injecting

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, National Academy of Sciences; Bacteriophage injecting DNA into bacterial cell , Graham Colm. Remember, a virus can exist outside of its host or inside its host. So we need some more terms: 2. How does a virus infect its host? From the Virtual Microbiology Classroom on ScienceProfOnline.com
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Image: Bacteriophage injecting DNA into bacterial cell , Graham Colm 2a. How does a bacteriophage infect its host? From the Virtual Microbiology Classroom on ScienceProfOnline.com
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Entry of Viruses into Animal Cells 3 Methods : 1. Direct penetration of naked virus - Viral genome enters cell, while capsid remains on cell’s surface. Like how phages enter bacteria. Remember the endomembrane system of eukaryotes? 2. Endocytosis 3. Membrane fusion - With membrane fusion and endocytosis, the capsid is removed once inside the host cell. Images: Virus Entry into Cell ; Endocytosis & Exocytosis , NIGMS; Endocytosis & exocytosis, Nicolle Rager Fuller, NSF 2b. How does an animal virus infect its host? Let’s review that animation on endocytosis & exocytosis From the Virtual Microbiology Classroom on ScienceProfOnline.com
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Image: Mechanisms of Viral entry into host cells , NCBI, US Gov. 2b. How does an animal virus infect its host? Examples of Animal Virus Entry From the Virtual Microbiology Classroom on ScienceProfOnline.com
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Four basic steps: 1. Recognize & attach to host cell. 2. Infect (get inside) host cell. 3. Force cell to manufacture viruses. 4. New viruses exit the host cell. Image: Source unknown . How Do Viruses Reproduce? From the Virtual Microbiology Classroom on ScienceProfOnline.com
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3. How does the infecting virus trick the host into manufacturing more viruses? Host cell reads viral genetic instructions and manufactures raw materials needed to build copies of new viruses. The viral parts and pieces self-assemble. Q: What process is required for host to make more genetic material for new DNA viruses ?
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