Fats obtained from a variety of foods are essential nutrients but may be harmful to the body in some forms. are healthy fats that have at least one double bond in the fatty acid chain. Most are artificially hydrogenated fats that have detrimental effects on health.

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.