Question

The enzyme which can cut molecules of DNA into segments is known as
A. DNA polymerase
B. DNA ligase
C. Restriction enzyme
D. DNA gyrase

Answer 1

Enzymes are proteins that act as physical catalysts (biocatalysts). Catalysts stimulate chemical responses. The molecules upon which enzymes may function are named substrates and the enzyme renovates the substrates into several molecules named as products.

Complete Answer:
Let us analyse the given options to find out the correct answer.
Option A: A DNA polymerase is a component of a family of enzymes that stimulate the synthesis of DNA particles from nucleoside triphosphates, the molecular prototypes of DNA. These enzymes are necessary for DNA reduplication and usually specialize in factions to develop two comparable DNA duplexes from a solitary original DNA duplex. This is the incorrect option.

Option B: DNA ligase is a distinct kind of enzyme, a ligase, that stimulates the uniting of DNA strands concurrently by catalyzing the arrangement of a phosphodiester link. This is the incorrect option.

Option C: Restriction enzymes are nicknamed as 'molecular scissors' due to their skill to cut DNA components. Thus, restriction enzymes are of enormous benefit in genetic engineering for constraining wished genes for incorporation. This is the correct option

Option D: DNA gyrase is an enzyme inside the grade of topoisomerase and is a subdivision of Type II topoisomerases that curtails topological pressure in an ATP conditional expression while double-stranded DNA is being unwound by lengthening RNA-polymerase or by helicase in front of the improving reduplication fork. This is the incorrect option.

Thus, option C is the correct answer.

Note: A restriction enzyme is a DNA-cutting enzyme that understands particular sites in DNA. Many restriction enzymes make strumbled slices at or near their recognition sites, achieving ends with a single-stranded overhang. If two DNA particles have conforming ends, they can be assembled by the enzyme DNA ligase.