which are the main form of secondary structure of protein ( ) A: supercoil B: β-pleated sheet C: β-turn D: random coil E: double helix

which are the main form of secondary structure of protein( ) A: Supercoil B: β-pleated sheet <br/>C . β-turn C: random coil D: double helix

The function of RNA primer is A: to separate DNA double helix B: to provide 3′-OH to synthesize DNA molecule C: to provide 5′-P to synthesize DNA molecule D: to provide 5′-P to synthesize RNA molecule E: to release supercoil of DNA