A replicon is a DNA molecule, or a region of DNA or RNA, that replicates from a single origin of replication. There are 50000–100000 replicons in a typical mammalian cell.

Correct Option: D

A replicon is a DNA molecule, or a region of DNA or RNA, that replicates from a single origin of replication. There are 50000–100000 replicons in a typical mammalian cell.

Ampicillin inhibits the third and final stage of bacterial cell wall synthesis in binary fission, which ultimately leads to cell lysis.
Nystatin forms pores in the membrane that lead to K+ leakage and death of the fungus. Tetracycline antibiotics are protein synthesis inhibitors, inhibiting the binding of aminoacyl-tRNA to the mRNA-ribosome complex.
Anthramycin exerts its biological activity through covalent binding to the C2-NH2 of guanine within the minor groove of DNA thus damaging the actual structure.

Correct Option: B

Ampicillin inhibits the third and final stage of bacterial cell wall synthesis in binary fission, which ultimately leads to cell lysis.
Nystatin forms pores in the membrane that lead to K+ leakage and death of the fungus. Tetracycline antibiotics are protein synthesis inhibitors, inhibiting the binding of aminoacyl-tRNA to the mRNA-ribosome complex.
Anthramycin exerts its biological activity through covalent binding to the C2-NH2 of guanine within the minor groove of DNA thus damaging the actual structure.