Specialized proteins that act as catalysts for chemical reactions are

The carrier molecules of the electron transport system are located in the

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.

Can an organism fill more than one trophic level?