___ invented the in 1876, allowing instant communication over long distances
for the first time.
A. Alan Turing, computer
B. Johannes Gutenberg, printing press
C. Alexander Graham Bell, telephone
D. Steve Jobs, text message

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.