The Miller-Urey experiment was chemical experiment that simulated the conditions thought at the time to be present on Earth's early atmosphere and tested the chemical origin of life under those conditions. Steps taken to simulate Earth’s early atmosphere are shown on the figure to the right. What were the results of step 5?(15.8)

Which is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.

What drives the atp synthase reactions that produce atp

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.