Cell-life cycle

Phosphorylation plays an important role in several processes of the cell life-cycle including cell proliferation, division, and apoptosis. 

Figs. 27.1 and 27.2 illustrate the cell-life cycle and the cell-cycle specificity respectively as given below ... 

Figure 5.1 Cell life cycle in a batch fermentation process. Adapted from Dunn et al.

Preservatives need to be hydrophilic as they act in the aqueous phase where micro-organisms live. To penetrate the cell wall of the micro-organism and interfere with the cell life cycle preservatives need to be hydrophobic as well. Because of the partly hydrophobic characteristics preservatives may diffuse into the lipophilic phase or will be solubilised in the aqueous phase. In this way the concentration of the preservative in the aqueous phase may become lower than required. Formulations of hydrophilic emulsions therefore will contain higher concentrations of preservatives than those of hydrophilic solutions. 

Polymer electrolyte, alkaline, phosphoric acid, molten carbonate, and solid oxide fuel cell technology descriptions have been updated from the previous edition. Manufacturers are focusing on reducing fuel cell life cycle costs. In this edition, we have included over 5,000 fuel cell patent abstracts and their claims. In addition, the handbook features a new fuel cell power conditioning section, and overviews on the hydrogen industry and rare earth minerals market. 

Pederson, T., and Robbins, E., 1970, Absence of translational control of histone synthesis during the HeLa cell life cycle, J. Cell Biol. 45 509. 

Prescott, D. M. (1964). Comments on the cell life cycle. Natl. Cancer Inst. Monograph 14, 57-72. 

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