Awoman was chopping vegetables when she accidentally cut her finger. a few days later, she observed a brownish layer on the wound on her finger. explain how the wound healed itself over time.

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.