Question

The spark discharge apparatus showed the presence of
A. Amino acids
B. Alcohols
C. Aldehydes
D. None of the above

Answer 1

Hint: The theory of Oparin-Haldane indicates that life evolved steadily from inorganic molecules, initially becoming "building blocks" and then merging to create complex polymers. The RNA universe hypothesis, which implies that the first life was RNA self-replicating, is backed by some scientists.

Complete answer: Stanley Miller and Harold Urey performed an experiment in the 1950s that revealed that by simulating the conditions of the early atmosphere of the Earth, many organic compounds could be produced spontaneously. The spark discharge system was used to carry a mixture of gases similar to those found in the early atmosphere of Earth over a body of water, reflecting the early ocean of Earth. An electric current, simulating lightning, was transmitted into the gas-filled chamber by electrodes. They studied the contents of the liquid tub, after allowing the experiment to run for one week. They discovered that from inorganic raw materials, many organic amino acids had spontaneously formed. In the body of water, these molecules collect together to form coacervates. Alcohols and aldehydes did not exist in the spark discharge apparatus.
Thus, option A is the correct answer.

Note: Urey and Miller's experiment provided the first scientific evidence for Oparin-hypothesis Haldane's of the origin of life. In order to show the biochemical basis of life, they performed genetic experiments. The ratio of methane, ammonia and hydrogen in the large flask was 2: 1: 2. The energy was supplied to the apparatus by heating the liquid in the gaseous flask as well as by electric sparks from tungsten electrodes.