The Earth in the universe, life and the evolution of life
Cognitive objective:
Create a prepared slide to distinguish the scales: The cell is a structural unit common to all living organisms.

Proposed activity:
Observe different strains of microorganisms under the microscope.
Make prepared slides.

Composition :

• 10ml of a strain of Euglena
  
• 10ml of a strain of Cyanobacteria Cylindrospermum
  
• 10ml of a strain of Paramecies
  
• 1 Petri dish of Saccharomyces cerevisae yeast
  
• 1 Petri dish of E. coli bacteria
  Instructional and technical instructions available on our website.
  
  Necessary material:
  Microscope, slides and cover slips
  Conservation:
  Bacteria: 1 month at 4 ° C
  yeasts: 1 month at 4 ° C
  Algae and cyanobacteria: 1 month at room temperature
  Paramecium: 2 weeks at 15 ° C