Enzyme unit many kinds of substance besides enzymes (for example, vitamins and hormones). Enzyme unit The enzyme unit (symbol U or sometimes EU) is a unit for the amount of a particular enzyme. One U is defined as the amount of the enzyme that produces a certain amount of enzymatic activity, that is, the amount that catalyzes the conversion of 1 micro-mole of substrate per minute. The conditions also have to be specified: one usually takes a temperature of 25°C and the pH value and substrate concentration that yield the maximal substrate conversion rate. The enzyme unit was adopted by the International
The Tao of Physics what has happened. The Tao of Physics The Tao of Physics: An Exploration of the Parallels Between Modern Physics and Eastern Mysticism is a 1975 book by physicist Fritjof Capra. It was a bestseller in the United States and has been published in 43 editions in 23 languages. The fourth edition in English was published in 2000. The following excerpt from "The Tao of Physics" summarizes Capra's motivation for writing this book “Science does not need mysticism and mysticism does not need science. But man needs both.” According to the preface of the first edition, reprinted in subsequent editions, Capra