General physiology; an outline of the science of life . Pig. 26.—Amceba-cell containing in itsprotoplasm one diatom shell and twosand-grains. Fig. 27.—Paramcecium bursaria, aciliate-infusorian cell, the exoplasm ofwhich is filled with small parasiticalga-cells (Zoochlorellce). Zoochlorellai, the nature of which as independent organisms hasbeen for a long time in dispute. They occur abundantly inthe cells of lower animals, particularly in many Infusoria andRadiolaria, to which by the activity of their chlorophyll-bodiesthey furnish oxygen, so that as regards respiration their hostsare largely i
General physiology; an outline of the science of life . Pig. 26.—Amceba-cell containing in itsprotoplasm one diatom shell and twosand-grains. Fig. 27.—Paramcecium bursaria, aciliate-infusorian cell, the exoplasm ofwhich is filled with small parasiticalga-cells (Zoochlorellce). Zoochlorellai, the nature of which as independent organisms hasbeen for a long time in dispute. They occur abundantly inthe cells of lower animals, particularly in many Infusoria andRadiolaria, to which by the activity of their chlorophyll-bodiesthey furnish oxygen, so that as regards respiration their hostsare largely independent of the oxygen of the medium in whichthey live (Fig. 27). We shall not enumerate exhaustively the solid components thatare to be met with in cells. Such a list would fill many pages. Itis only important here to understand how different in nature arethe various solid constituents of protoplasm that may occur in in-dividual cells, and how unjustified is the idea of the unitary characterof protoplasm. We will now leave the solid elements, a
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Keywords: ., bookcentury1800, bookdecade1890, bookidgen, booksubjectphysiology
