Virology:list two requirements attenuated viruses need to have to used as a vaccine

Q: Biology ___________ is the period of time in which a cell divides. (Mark all that apply) Group of…

A: Introduction The cell is the most fundamental structural and functional unit of life. Every cell has…

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Q: Inflammation

A:

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Q: Based on what you know about cells of the immune system and the material presented in Chapter 6,…

A: As per our company guideline we are supposed to answer only first question. KIndly repost other…

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A:

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Virus

Viruses are infectious microscopic agents that can only reproduce in live cells of animals, plants, or microbes and are smaller than bacteria. Vertebrates, invertebrates, plants, protists, and fungi are among their many hosts. Viruses are unable to multiply on their own due to the lack of necessary cellular machinery, but they can guide the cell machinery of a host to make additional viruses by infection. The virus enters and attaches to a particular host cell, injects its genetic material, and reproduces by using the host’s genetic material. Viruses cause infection by taking entry into the host cell and using the host cell’s enzymes and raw materials to multiply.