Titlebook: Introduction to Bacteria and Their Ecobiology; R. N. Doetsch,T. M. Cook Book 1973 University Park Press 1973 bacteriology.cell.genetics.im

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R. N. Doetsch,T. M. Cooke form of Socratic dialogues between a mathematician (MATH.), two physicists (pHYS. and EXP.) and a philosopher (PHIL.). However, although one of the authors is a theoretical physicist and the other a mathematician, the reader must not think that their opinions have been divided among the participan

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t transformations. In particular, the quantum field theories of the electromagnetic, weak, and strong interactions of the fundamental particles all belong to the class of ., so called because they are invariant to coordinate-dependent transformations on internal space of the particles. We start this

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缺乏

Some General Structural Features of Bacteria,iew of their anatomical features will clearly reveal those characteristics by which they are identified. We will consider here mainly, but not exclusively, the . (“true bacteria”), which possess rigid walls, divide by transverse binary fission and, when motile, swim by means of flagella.

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Heterogeneity of Form and Function, almost exclusive use of . in studies of biochemical transformations and molecular genetics has convinced many practitioners that other bacteria are similar to it. How misleading this attitude is will be seen by noting the groups of bacteria now to be described. In some instances students of “odd” b

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Bacterial Energetics,, fermentations, putrefaction, and decay. One of Pasteur’s important contributions was his demonstration that bacteria are causative agents of these alterations. As Pasteur emphasized, these chemical changes are not incidental, but rather they are a direct result of the operation of vital processes.

BROOK

Bacteria as Environmental Determinants,ding light, temperature, and oxygen, as discussed in Chapter 4, play key directive roles in the physiology of individual bacteria, and in the development of biotic communities. However, living organisms are not passive and their activities influence the character of the physical environment itself.