During $DNA$ replication,the strands separate by

On which template strand of $DNA$ does continuous replication occur?

Describe various enzymes involved in $DNA$ replication.

On which template strand of $DNA$ is the new strand synthesized discontinuously?

$E. coli$ bacteria grown in ${}^{15}NH_4Cl$ medium for several generations are allowed to grow in ${}^{14}NH_4Cl$ medium. After $2$ generations,the density gradient of the isolated $DNA$ is:

Distinguish between: Leading strand and Lagging strand.