Practical work № 8. “The digestive system”
Information about practical work
In this practical work, students are introduced to the types of heterotrophic organisms. And build a model of their digestive system and determine the pH – environment.
- ziplock bag (60*40 cm -1 pcs.)
- marker
- glycerine
- walnuts or grains-4-5 grains
- test tube-5 pcs
- universal pH indicator paper
- hydrochloric acid (HCl)
- bile acid
- baking soda
- water
- tweezers
- spoon
