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Biol Bull 104: 1-11. (February 1953)
© 1953 Marine Biological Laboratory
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CARBOHYDRATE METABOLISM OF THE DEVELOPING EGG AND EMBRYO

JOSEPH HALL BODINE 1 and WILLIAM LIONEL WEST 1

1 Zoology Laboratory, State University of Iowa, Iowa City, Iowa

1. A study has been made of the carbohydrate content and changes in the intact egg and isolated embryo of the grasshopper, Melanoplus differentialis, during the course of embryonic development.

2. Changes in the carbohydrate content of yolk have been compared with similar changes in the developing embryo.

3. Respiration of intact isolated embryos in different carbohydrate substrates indicates a marked utilization of phosphorylated compounds.

4. The endogenous oxygen uptake of embryo homogenates is markedly stimulated by hexose monophosphates in the presence of Mg++.

5. Aerobic glycolysis seems to be controlled by enzymes located only in the cytoplasm of the embryonic cells.

6. Phosphorylation of carbohydrates occurs either in the yolk or at the surface of the embryonic cells.






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Copyright © 1953 by the Marine Biological Laboratory.