Mitchell, Peter Dennis, 1920–92, British chemist, Ph.D. Cambridge, 1950. A professor at the Univ. of Edinburgh (1955–63), Mitchell was named director of Glynn Research Laboratories in 1964. He formulated the chemiosmotic theory, which explains how energy is generated in the mitochondria of living cells. He received the 1978 Nobel Prize in Chemistry for his work.
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