The Encyclopaedia Britannica; ..A dictionary of arts, sciences and general literature . o construct or-ganic substance from absorbed carbon-dioxideand water (see, under Photosvntax, in these Sup-plements). The constructive or anabolic processreaches its highest expression in the living sub-stance protoplasm. Catabolism or destructivemetabolism includes the breaking down of proto-plasm itself and of other complex breaking down is usually associated with theabsorption of oxygen and the evolution of carbon-dioxide. These processes affect, also, the state ofenergy in the plant, ana


The Encyclopaedia Britannica; ..A dictionary of arts, sciences and general literature . o construct or-ganic substance from absorbed carbon-dioxideand water (see, under Photosvntax, in these Sup-plements). The constructive or anabolic processreaches its highest expression in the living sub-stance protoplasm. Catabolism or destructivemetabolism includes the breaking down of proto-plasm itself and of other complex breaking down is usually associated with theabsorption of oxygen and the evolution of carbon-dioxide. These processes affect, also, the state ofenergy in the plant, anabolism being accompaniedby the conversion of kinetic into potential energy,and catabolism by the conversion of potential intokinetic energy. See also Physiology, Vol. XIX,pp. 49-55; and Anabolism, in these Supplements. METABOLISM, in animals. See Nutrition,Vol. XVII, pp. 678-682. METAGONY. See Heredity, in these Sup-plements. METAMERISM. In zoology, see Mollusc XVI, pp. 672, 673. In chemistry, see Chem-istry, Vol. V, p. 551. METAMORPHIC ROCKS. See X, pp.


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