Scientists place great confidence in cell theory, yet it has not been evaluated using every living thing on the planet. What piece of evidence would most likely cause scientists to decide that cell theory would need to be revised?

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.