When double-stranded dna is heated to 95°c, the bonds between complementary base pairs break to produce single-stranded dna. considering this observation, is the strand separation step required for replication of the double helix spontaneous? why or why not?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.