Science Homework Help

1.What intrinsic property of DNA promotes the formation of the leading and lagging strand during DNA replication?  

DNA is hydrophobic. 

  DNA is a polymer composed of nucleotide subunits.  

 DNA is antiparallel in orientation. 

  DNA has a strong negative charge. 

  DNA is held together by hydrogen bonding and base stacking. 

2. Which enzyme acts during DNA replication to denature DNA, make a single strand cut, and then passes one sugar phosphate strand through the incision to relive superhelical stress? 

 Type 1A Topoisomerase   

Telomerase   

Type 1B Topoisomerase 

  DNA endonuclease   

Type IIA Topoisomerase