Explore how bacteria move, glow, and transform the world around them.
In this section from Atlas of Bacteriology, you’ll see how many bacteria use flagella to move, how their motion varies from slow drift to rapid movement, and how scientists tell the difference between true motility and Brownian motion. It also covers chemotaxis and aerotaxis, where bacteria respond to nutrients or oxygen, and even describes visual tricks like thermotropism and curious laboratory demonstrations of movement and attraction.
The text then turns to phosphorescent bacteria, explaining when light appears and how to maintain or restore it in the lab. It also discusses the thermic effects of bacterial metabolism, clarifying that heat production is usually too small to notice in cultures but can play a role in natural settings. Finally, it introduces chemical effects, including how bacteria store substances, excrete enzymes, and transform surrounding nutrients, with clear demonstrations of proteolytic and other fermenting activities.
- How flagella enable movement and how to distinguish active movement from molecular motion.
- Different taxis responses, including positive chemotaxis and aerotaxis.
- Phosphorescent bacteria, what makes them glow, and how to preserve light emission in the lab.
- Heat generation in metabolism and its role in natural decomposing matter.
- Ferments, enzymes, and the chemical changes bacteria cause in their environment.
Ideal for readers seeking a solid, illustrated overview of bacterial movement, light emission, heat effects, and chemical actions within microbiology.