Problem:
Question 1: Which of the following was NOT included in Miller's reaction chamber, which contained substances intended to duplicate the atmosphere of ancient Earth?
a. carbon dioxide
b. methane
c. ammonia
d. water vapor
e. both methane and ammonia
Question 2: Protein synthesis on the primordial Earth may have been catalyzed by ____ before the evolution of enzymes.
a. DNA
b. carbohydrates
c. amino acids
d. RNA
e. lightning
Please seggest correct answer and also explain your answer.