Why is the same restriction enzyme used when cutting the gene out of a chromosome and the plasmid out of the bacterium?

Is a hamster and guinea pig part of the same species ?

Acar traveld with an average speed of 60 miles per hour for 2 hours. how far did it travel

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?