OML Search

Model Intestine

Related Topics:
More Science Worksheets
Math Worksheets


 
A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

Testing a Model Intestine
This is an experiment used to model the digestive system. We use a Visking tubing to model the digestive system and show what substances can pass through its lining. The Visking tubing is semi-permeable: it allows smaller molecules like water and glucose to pass through its microscopic holes but larger molecules like starch cannot pass through it.
Procedure:
1. Soak the Visking tubing in water to make it flexible.
2. Add a mixture of starch and sugar solution into the Visking tubing which will model the intestine (gut).
3. Put the tubing in a beaker of warm water.
4. Sample the liquids inside and outside the tubing. Test the samples for starch and glucose.
5. After 15 minutes, sample the liquids inside and outside the tubing again. Test the samples for starch and glucose.
6. Record the results.
7. What is your conclusion?



Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


OML Search


We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.


[?] Subscribe To This Site

XML RSS
follow us in feedly
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines