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protoplasm

(Encyclopedia)protoplasm, term once used for the fundamental material of which all living things were thought to be composed. It was studied by a number of early scientists, especially by Félix Dujardin, J. E. Pur...

cytoplasm

(Encyclopedia)cytoplasm: see protoplasm.

Dujardin, Félix

(Encyclopedia)Dujardin, Félix fālēksˈ düzhärdăNˈ [key], 1801–60, French zoologist. He did valuable research on bacteria and on the Infusoria. In 1835 he described protoplasm in unicellular animals, naming...

Schultze, Max Johann Sigismund

(Encyclopedia)Schultze, Max Johann Sigismund mäks yōˈhän zēˈgĭsmo͝ond sho͝olˈtsə [key], 1825–74, German biologist, director of the Anatomical Institute at Bonn from 1859. He established that the cells ...

Bütschli, Otto

(Encyclopedia)Bütschli, Otto ôˈtō büchˈlē [key], 1848–1920, German zoologist. He was professor of zoology at the Univ. of Heidelberg. His researches on invertebrate animals advanced knowledge of the develo...

Nägeli, Karl Wilhelm von

(Encyclopedia)Nägeli or Naegeli, Karl Wilhelm von both: kärl vĭlˈhĕlm fən nāˈgəlē [key], 1817–91, Swiss botanist. He was professor at the Univ. of Munich from 1858 and was noted especially for his work ...

Mohl, Hugo von

(Encyclopedia)Mohl, Hugo von ho͞oˈgō fən mōl [key], 1805–72, German botanist. He is noted for his research on the nature of protoplasm and chlorophyll and on the physiology of higher plant forms. Mohl was pr...

physiology

(Encyclopedia)physiology fĭzēŏlˈəjē [key], study of the normal functioning of animals and plants during life and of the activities by which life is maintained and transmitted. It is based fundamentally on the...

Ciliophora

(Encyclopedia)Ciliophora sĭlˌē-ŏfˈərə [key], phylum in the kingdom Protista consisting of the ciliates, or ciliophores, complex freshwater or saltwater protozoans that swim by the coordinated beating of thei...

zoology

(Encyclopedia)zoology, branch of biology concerned with the study of animal life. From earliest times animals have been vitally important to man; cave art demonstrates the practical and mystical significance animal...

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