What is the point at which a dna strand is unzipped so that it can form new complimentary strands?

a). polymerase
b). nuclease
c). replication fork
d). double helix

replication fork

Explanation:

DNA strand is unzipped to allow new complementary strands to be formed. The chains separate starting from one end through breakage of hydrogen bonds. This exposes the bases. Deoxyribonucleotides align themselves in a complementary way along the two chains. The process of replication occurs with the help of template strand and DNA polymerase enzyme that synthesizes the new strand.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.