Principle
Bacteria are real life artists: Some of the organisms belonging to this group find adequate life conditions everywhere on earth, in the depths of the oceans, on highest mountains, in hot springs, and in the Arctic. Bacteria can be compared with regard to various aspects, whether they are pathogens or of beneficial use, whether they can only survive or die in an atmosphere containing oxygen. Today you will learn to differentiate bacteria on account of their various shapes.

Benefits


Two proven methods to visualize bacteria

Easily available samples are used
 


Tasks


Detect bacteria using an appropriate microscope

Describe the shape of bacteria in a hay infusion and in a yoghurt drink



What you can learn about


Bacteria

Pathogens

Staining


For visualizing bacteria a light microscope with 1000x magnification is required!