Question

Which of the following is correct regarding Plasmids?

• A. Are small closed circular DNA molecules
• B. Consist of single-stranded circular DNA
• C. Is integral part of bacterial genome
• D. Plasmid DNA are unable to transfer to other bacteria

Hint:

Plasmids: extrachromosomal, circular, double-stranded DNA.
Self-replicating.
Can be transferred via conjugation.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Plasmids are extrachromosomal DNA molecules.
They are found in bacteria and some other organisms.

Step 2: Key Formula or Approach:
No specific formula.
Need to understand the properties of plasmids.

Step 3: Detailed Explanation:
Plasmids are small, closed circular DNA molecules.
They are double-stranded, not single-stranded.
They are not an integral part of the bacterial genome.
They are self-replicating and can be transferred between bacteria.
Thus, the correct statement is that they are small closed circular DNA molecules.

Step 4: Final Answer:
Plasmids are small closed circular DNA molecules.
Hence, the correct option is (A).