In the presence of base, cyclic ketones are deprotonated and racemized.
2.
To our surprise and joy, we have found that in most amber inclusions, the amino acids are not racemized at all!
3.
Life depends exclusively on the left-handed amino acids, but when an organism dies, exposure to the environment causes decay in which the amino acids become racemized _ that is, they gradually lose their left-handedness and become mixtures of left-handed and right-handed molecules.
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