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6.Evolution
normal
Which of the following amino acids was not found to be synthesized in Millers’s experiment ?
A
Alanine
B
Glycine
C
Aspartic acid
D
Glutamic acid
(AIPMT-2006)
Solution
(d) : Stanley Miller in $1953$, who was then a graduate student of Harold Urey at the University of Chicago, circulated four gases methane, ammonia, hydrogen and water vapour in an air tight apparatus and passed electrical discharges from electrodes. He passed the mixture through a condenser. He circulated the gases continuously in this way for one week and then analysed the chemical composition of the liquid inside the apparatus. He found a large number of simple organic compounds including some amino acid such as alanine, glycine and aspartic acid. Glutamic acid was not found.
Standard 12
Biology