Which is the usual order of a viral replication cycle when it is making new virions? O Host recognition > replication > entry > uncoating > release O Uncoating > host recognition > replication > entry > release O Prophase > metaphase > anaphase > telophase > cytokinesis Host recognition > entry > uncoating > replication > release
Which is the usual order of a viral replication cycle when it is making new virions? O Host recognition > replication > entry > uncoating > release O Uncoating > host recognition > replication > entry > release O Prophase > metaphase > anaphase > telophase > cytokinesis Host recognition > entry > uncoating > replication > release
Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:**Understanding the Viral Replication Cycle**
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**Question:**
Which is the usual order of a viral replication cycle when it is making new virions?
**Options:**
1. Host recognition > replication > entry > uncoating > release
2. Uncoating > host recognition > replication > entry > release
3. Prophase > metaphase > anaphase > telophase > cytokinesis
4. Host recognition > entry > uncoating > replication > release
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**Explanation:**
In the context of virology, understanding the steps involved in the viral replication cycle is crucial for comprehending how viruses infect host cells and produce new virions. Here’s a breakdown of each option:
1. **Host recognition > replication > entry > uncoating > release**:
This sequence is incorrect. While host recognition and release are involved in the viral replication cycle, the order of the processes here is not accurate.
2. **Uncoating > host recognition > replication > entry > release**:
This sequence is also incorrect. Uncoating typically occurs after the virus has entered the host cell.
3. **Prophase > metaphase > anaphase > telophase > cytokinesis**:
This sequence describes the stages of mitosis, which is the process of cell division, not the viral replication cycle.
4. **Host recognition > entry > uncoating > replication > release**:
This is the correct sequence. Here’s what happens at each step:
- **Host recognition**: The virus identifies and binds to receptors on the surface of the host cell.
- **Entry**: The virus or its genetic material enters the host cell.
- **Uncoating**: The viral capsid is removed, releasing the viral genome into the host cell.
- **Replication**: The host cell’s machinery is used to replicate the viral genome and produce viral proteins.
- **Release**: New virions are assembled and released from the host cell to infect additional cells.
In summary, the usual order of a viral replication cycle when making new virions is accurately described by the fourth option: **Host recognition > entry > uncoating > replication > release**. Understanding this cycle is vital for the study of viruses and the development of antiviral therapies.
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