Think of it as a zipper. The top zipper is the leading strand, the bottom is the lagging, and the actual zipper thing is the helicase unwinding the 2 parts. You need the top and bottom strands to have a replication fork
The sun was formed by a rotating cloud of gas and a bunch of dust called the solar nebula.
What it eats, what weather it's build for and DNA
_______________ reactions transfer energy to the surroundings, usually as heat.
C. Exothermic