True or false cytokinesis is the process of nuclear division; mitosis is the process of cytoplasma and cell membrane division? (if false, change term or terms in bold)

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.