Directions: Explain the experiment conducted by Miller and Urey that provided the first evidence that organic molecules needed for life could be formed from inorganic components. Below is an illustration for your guidance amd write your answer on the space provided
Answers
Explanation:
The crucial experiment, which was done by two famous scientists Miller and Urey, was a type of experiment that was performed to study the life formation and origin. The complete experimental set-up is placed, including two flasks (one contains chemicals and another one has water), electrodes with spark generating set-up, U-shaped tube, cooling chambers, heat source, and gas inlets. The substances which were used in the experiment are ammonia, methane, hydrogen, along with water. The water undergoes evaporation, and enters the flask containing chemicals. Thus, the sparking process produces a form of lightning in the chemical flask (consist of chemicals and water vapor). After heating by the lightning, the substances are cooled down via the cooling chamber, and thus the water condensation usually takes place and gets collected into U-shaped tube. This was observed that the solution which was collected in the tube shows pink color (after a day). When the process continues, the color of the solution changes to dark red. After this, mercuric chloride was included to protect the solution from contamination through microbes.
At last, the reaction was ended by the addition of sulfuric acid and barium hydroxide. By different separation techniques, miller detected approximately five primary amino acids, alpha alanine, beta-alanine, and glycine (all three insufficient amounts while alpha aminobutyric acid and aspartic acid are in low quantity. This was the Miller-Urey experiment.
As the experiment performed by Miller and Urey shows the formation of amino acids from non-organic materials such as water, ammonia, hydrogen (methane is not included because it's an organic molecule), but these three are also involved in the formation of amino acids. Hence, this experiment gives a well-supported idea that organic molecules (that is, amino acids in this case) are formed by inorganic molecules (hydrogen, ammonia, and water).
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Answer:
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Explanation: