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The only structural pattern that has bee...

The only structural pattern that has been found among isometric viruses is

A

icosahedral

B

spherical

C

helical

D

tetrahedral

Text Solution

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The correct Answer is:
To solve the question regarding the only structural pattern found among isometric viruses, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Term "Isometric Viruses":** - Isometric viruses are viruses that have a symmetrical structure. They typically exhibit a spherical shape and are characterized by their geometric arrangement. 2. **Identify the Structural Patterns:** - The options given are: - Option 1: Icosahedral - Option 2: Aspherical - Option 3: Helical - Option 4: Tetrahedral 3. **Analyze Each Option:** - **Icosahedral:** This is a common structural pattern for many isometric viruses. It consists of 20 equilateral triangular faces, which gives it a spherical appearance. - **Aspherical:** This term suggests a lack of a defined shape, which does not apply to isometric viruses. - **Helical:** Helical viruses have a spiral structure, which is not characteristic of isometric viruses. - **Tetrahedral:** This structure has 4 triangular faces, which is not a common pattern for isometric viruses. 4. **Conclusion:** - Based on the analysis, the only structural pattern that has been found among isometric viruses is **icosahedral**. ### Final Answer: The only structural pattern that has been found among isometric viruses is **icosahedral**. ---
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