Question

In his laboratory apparatus, Stanley Miller synthesized
A. Proteins
B. DNA
C. Amino acids
D. Protobionts

Answer 1

Miller’s experiment was a chemical experiment that simulated the conditions of thought at the time (1952) to be present on the early Earth. It is also called the Miller-Urey experiment. Testing the chemical origin of life under those conditions is the most important invention of this experiment.

Complete answer:
Water (${H_2}O$), methane ($C{H_4}$), ammonia ($N{H_3}$), and hydrogen (${H_2}$) are the main requirements compounds for the experiment. The chemicals were combined and all are sealed inside a sterile 5-liter glass flask that should be sterile and connected to a 500 ml of flask half-full of water. The water in the smaller flask was heated so that evaporation is induced, and allows water vapor to enter the larger flask.
Between the electrodes continuous electrical sparks are simulated that give lightning in the water vapor and gaseous mixture, and then the atmosphere is cooled again for stimulation so that water is condensed. After the condensation, it is trickled into a U-shaped trap at the bottom of the apparatus. After a day, the solution collected at the trap had turned pink in color, and after a week of continuous operation, the solution was deep red and turbid. He observed the formation of simple organic amino acids.

Hence, the correct option is (C)-Amino acids.

Note: In his technical paper on date 15 May 1953 which transformed the concept of scientific ideas on the origin of life into a respectable realm of empirical inquiry his Miller experiment has appeared. The study of this experiment has become the basis of life origin on the definition of the classic textbook that specifies mainly on experimental evidence on Oparin-Haldane’s theory of primordial soup.