The cell theory states that the cell is the basic unit of structure for all organisms. What smaller structure would make up the cells of all organisms? 1) Cell wall
2) Chloroplast
3) Cell membrane
4) Nucleus

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.