CHAPTER 5 



Microbial Structures and 

 Staining Reactions 



REPRODUCTION OF BACTERIA SHAPE 



THE METRIC SYSTEM ARRANGEMENT 



SIZE WEIGHT 



COLLOIDAL NATURE OF PROTOPLASM 



INDIVIDUAL STRUCTURES OF BACTERIA 



STAINING OF MICROBES 



To think in terms of living things as minute as bacteria is more 

 difficult for some individuals than it is for others, and becoming 

 familiar with the concept of a world of microscopic plants and 

 animals requires orientation. A few students never make this 

 transition and their laboratory technic is a direct reflection of this 

 maladjustment. When the instructions call for inoculating a 

 medium with a few bacteria, the idea of transferring a barely 

 visible amount of microbial growth cannot be fathomed by persons 

 whose world is entirely populated with humans, horses, elephants, 

 the neighbor's dog, etc. 



REPRODUCTION OF BACTERIA 



Higher plants and animals possess specialized organs for carry- 

 ing on the process of reproduction, just as they are endowed with 

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