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The plasmids present in the bacterial cells are

1. circular double helical DNA molecules
2. circular double helical RNA molecules
3. linear double helical DNA molecules
4. linear double helical RNA molecules

Correct answer: circular double helical DNA molecules

Solution

Plasmids are small, independently replicating genetic elements in bacteria, and they are typically made of DNA, not RNA. In most bacteria, they exist as circular double-stranded DNA molecules.

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