How many of the given statements are not incorrect? I. The plasmid is autonomously replicating circular extra-chromosomal DNA. II. Ligase enzyme belongs to a larger class of enzymes called nucleases.

Question

How many of the given statements are not incorrect?

I. The plasmid is autonomously replicating circular extra-chromosomal DNA.
II. Ligase enzyme belongs to a larger class of enzymes called nucleases.
III. DNA fragments are negatively-charged molecules.
IV.E. colialways has genes encoding resistance to antibiotics such as ampicillin and chloramphenicol.

TestHub · Accepted Answer

Statement II and IV are not correct.

Antibiotic resistance is not seen generally inE.coli.

Ligases are enzymes that are capable of catalyzing the reaction of joining two large molecules by establishing a new chemical bond, generally with concomitant hydrolysis of a small chemical group on one of the bulky molecules or simply linking of two compounds together.

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