vascular resistance is the friction between veins and arteries and blood. In essence it is a measure of the flow of blood which is not a factor that directly affects vascular resistance blood viscosity blood vessel length blood vessel Lumen size or blood levels of estradiol and testosterone

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.