Question

42 multiple choice 1 point a plasmid is a circular dna structure and it can be cut open by a dna ligase a dna polymerase a restriction enzyme an antibiotic

Explanation:

To solve this, we analyze each option:

• DNA ligase joins DNA fragments, not cut them.
• DNA polymerase synthesizes DNA, not cut plasmids.
• Restriction enzymes (endonucleases) cut DNA at specific sites, suitable for opening plasmids.
• Antibiotics target bacteria, not cut DNA.

Answer:

C. A restriction enzyme