. Bacteria, yeasts and molds in the home. Bacteriology; Yeast fungi; Molds (Fungi). STRUCTURE OF YEASTS 79 in size until finally it may be as large as the original plant (Fig- 33» ^)- Usually by this time, if the growth is vigor- ous, there may have appeared a second bud. The latter sometimes arises from the side of the first cell and some- times from the side of the first bud, giving an appearance such as is shown at Fig. 33, c. This budding continues, the little buds appearing one after the other, until there are produced irregular-shaped groups like those shown at Fig- 33) ^- For a consider
. Bacteria, yeasts and molds in the home. Bacteriology; Yeast fungi; Molds (Fungi). STRUCTURE OF YEASTS 79 in size until finally it may be as large as the original plant (Fig- 33» ^)- Usually by this time, if the growth is vigor- ous, there may have appeared a second bud. The latter sometimes arises from the side of the first cell and some- times from the side of the first bud, giving an appearance such as is shown at Fig. 33, c. This budding continues, the little buds appearing one after the other, until there are produced irregular-shaped groups like those shown at Fig- 33) ^- For a considerable time the cells in these groups remain attached to each other, so that a little of the sediment from a fermenting liquid will appear under the microscope as shown in Fig. 33, d. After a while, how- ever, the different cells drop apart and may go into a resting stage, each cell remaining by itself. These cells are capable of growth and development, either imme- diately or subsequently, when again placed in a solution which furnishes them food. This method of multipli- cation, which is distinctly characteristic of yeasts and separates them sharply from bacteria, the next group of plants to be studied, is known as budding. The yeast plants are therefore sometimes called the budding fungi. The Spore-bearing State. Under some conditions yeast plants produce a different kind of reproductive body known as spores. If a lot of yeast is placed where it has mois- ture but insufficient food, it does not grow by the normal. Fig. 33. Growing yeast cells, showing method of budding and forming groups of 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 Conn, H. W. (Herbert William), b. 1859. Boston, New York, Ginn and Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteri, bookyear1917
