1. Attachment: The rhinovirus attaches to the surface of a host cell, typically a cell lining the nose or throat.
2. Entry: The virus enters the cell through endocytosis, a process where the cell membrane engulfs the virus.
3. Uncoating: The viral capsid (outer shell) breaks down, releasing the virus's genetic material (RNA) into the cell.
4. Replication: The viral RNA uses the host cell's machinery to create copies of itself.
5. Protein Synthesis: The viral RNA directs the cell to produce viral proteins, which are the building blocks for new virus particles.
6. Assembly: Newly synthesized viral RNA and proteins assemble into new virus particles.
7. Release: The newly assembled virus particles are released from the host cell, often by bursting it open (lysis), and then go on to infect other cells.
Key points to remember:
* RNA virus: Rhinoviruses are RNA viruses, meaning their genetic material is RNA, not DNA.
* Host cell dependence: Viruses cannot reproduce on their own and require a host cell to provide the resources for replication.
* Symptoms: The host cell damage caused by viral replication leads to the symptoms associated with the common cold, such as sneezing, coughing, and a runny nose.
Note: This is a simplified explanation. The process of viral replication is complex and involves multiple steps and interactions with the host cell.
