Final answer:
Tn5 and Tn10 transposases act as enzymes that facilitate the movement of transposons in DNA by catalyzing cut-and-paste transposition.
Step-by-step explanation:
The Tn5 and Tn10 transposases act as enzymes that catalyze the movement of transposons, or jumping genes, in DNA. They facilitate the cut-and-paste transposition of DNA transposons, allowing them to move from one location to another in the genome. Transposases are responsible for the insertion of transposons into new DNA locations, which can affect the phenotype of a cell by activating or inactivating specific genes.