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Virus Entering a Cell
Age 12 · Biology
A virus attaches to the outside of a cell and sends its genetic material inside. The cell then makes new virus particles that can go on to infect other cells.
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In the picture
- Virus on the cell surface: the virus has attached to the cell membrane.
- Strand crossing the membrane: viral genetic material enters the cell.
- Cell nucleus: the viral genetic material reaches the cell’s control center.
- New virus particles inside the cell: the cell has assembled copies of the virus.
Examples
- A cold virus infecting cells in your nose and throat.
- A flu virus spreading from one cell to another in your lungs.
Key takeaways
- Viruses cannot reproduce on their own; they use a host cell’s machinery.
- New virus particles can leave the cell and attach to nearby cells.
Quiz: Virus Entering a Cell (Age 12)
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Why does a virus need to enter a host cell?
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After viral genetic material enters the cell, what does the cell do?
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What can the new virus particles do after they are made inside the cell?
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