- A A viral DNA genome that is packaged tightly inside a protein capsid
- B Small circular extrachromosomal DNA in bacteria (used as vector)
- C A restriction enzyme that cuts DNA at specific recognition sites
- D A type of ribosome complex involved directly in protein translation
Correct answer: B. Small circular extrachromosomal DNA in bacteria (used as vector)
Explanation: Plasmid: small circular DNA in bacteria, separate from chromosomal DNA. Used as vectors to carry foreign genes in recombinant DNA technology.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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