In E. coli, what is the function of DNA polymerase III? O a. to seal together the broken ends of DNA strands

O b. to add nucleotides to the 3' end of a

growing DNA strand

O c. to unwind the DNA helix during replication

d. to degrade damaged DNA molecules

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.