“Virtually every chemical reaction in a cell occurs at a significant rate only because of the presence of enzymes.”

—  Albert L. Lehninger

Principles of Biochemistry, Ch. 1 : The Foundations of Biochemistry

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Albert L. Lehninger 19
American biochemist 1917–1986

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“Investigating chemical reactions can be greatly complicated and often obscured by the presence of extraneous materials. So, the first step, therefore, is to learn how to analyze and classify materials to ensure that you are working with pure substances before initiating any reactions.”

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“It is not necessary that a specific set of 2000 enzymes be assembled… Whenever a collection of chemicals contains enough different kinds of molecules, a metabolism will crystallize from the broth.”

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“We’re clusters of chemical reactions that contemplate deep truths about the nature of reality.”

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“Q: What's the difference between an enzyme and a hormone?

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“Life, we now know, is nothing but a vast array of coordinated chemical reactions. The “secret” to that coordination is the breathtakingly complex set of instructions inscribed—again, chemically—in our DNA.”

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“Every cell from a cell.”
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