. Biology and human life. Biology. 3o8 BIOLOGY AND HUMAN LIFE the case in the ameba. In the presence of water, however, they are able to make use of solid food by first secreting a digestive ferment, or enzym, which liquefies the organic matter, and then absorbing the digested material (see Fig. 73). Air is absorbed through the moist membrane, and carbon dioxid and other wastes resulting from metabolism are excreted by diffusion through the cell wall. Material taken in is assimilated and the %== ogo (9 o 00 ^. Please note that these images are extracted from scanned page images that may have b
. Biology and human life. Biology. 3o8 BIOLOGY AND HUMAN LIFE the case in the ameba. In the presence of water, however, they are able to make use of solid food by first secreting a digestive ferment, or enzym, which liquefies the organic matter, and then absorbing the digested material (see Fig. 73). Air is absorbed through the moist membrane, and carbon dioxid and other wastes resulting from metabolism are excreted by diffusion through the cell wall. Material taken in is assimilated and the %== ogo (9 o 00 ^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gruenberg, Benjamin C. (Benjamin Charles), 1875-1965. Boston, New York [etc. ] Ginn and Company
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
