. Advanced biology. Biology; Physiology; Reproduction. A yeast cell takes in food aad grows a bud which enlarges and produces other buds. This results in a chain or group of yeast cells. cling together end to end and form a long filament. Each cell is an independent organism. Amitosis, (li^'isi()n without a spireme, is very infrequent. There is doubt as to whether amitosis is ever a method of reproduction in any normal and healthy cell. Many one-celled animals such as the Protozoa reproduce by fission. In the amoeba, the nucleus divides mitotically, the cytoplasm constricts between the two nuc
. Advanced biology. Biology; Physiology; Reproduction. A yeast cell takes in food aad grows a bud which enlarges and produces other buds. This results in a chain or group of yeast cells. cling together end to end and form a long filament. Each cell is an independent organism. Amitosis, (li^'isi()n without a spireme, is very infrequent. There is doubt as to whether amitosis is ever a method of reproduction in any normal and healthy cell. Many one-celled animals such as the Protozoa reproduce by fission. In the amoeba, the nucleus divides mitotically, the cytoplasm constricts between the two nuclei, and two new cells are formed. The Paramecium, too, reproduces by a like method. The micronucleus elongates, constricts, and divides. The macronucleus resembles a degenerative nucleus in that it divides amitotically. It frequently disintegrates and dies. Then the micronucleus builds a new macronucleus. As the cytoplasm constricts, a new mouth, groove, and gullet appear in one side of the organism. A new vacuole appears at the end of each new^ cell. The cytoplasm divides completely and the two new Para- mecia swim awav from each other. Reproduction by budding. Another type of reproduction found among simple organisms is budding. Problem. Study of budding in yeast cells. Break a small part of a compressed yeast cake into a dilute solution of molasses. Stir and then let the mixture stand in a warm place over night. Mount a drop of the material under the low power and then the high power of the 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 Wheat, Frank Merrill; Fitzpatrick, Elizabeth T. New York ; Boston [etc. ] : American Book Company
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