Question

The molecule(s) that act as molecular glue to bind DNA fragments together is/are?

1) DNAse
2) DNA ligase
3) ligandase
4) polymerase
5) DNAse AND ligandase

Answer 1

The molecule that acts as molecular glue to bind DNA fragments together is DNA ligase, facilitating the joining of DNA fragments by creating phosphodiester bonds between them.

So, the correct answer is 2) DNA ligase.

Step-by-step explanation:

The molecule that acts as a molecular glue to bind DNA fragments together is DNA ligase. This enzyme catalyzes the formation of a covalent phosphodiester linkage between the 3'-OH end of one DNA fragment and the 5' phosphate end of another DNA fragment. The action of DNA ligase is particularly important for sealing the ends of DNA segments, such as the Okazaki fragments during DNA replication, and for joining DNA fragments in various DNA repair processes and molecular cloning procedures. So, DNA ligase is the enzyme that functions as a molecular glue.

So, the correct answer is 2) DNA ligase.