Gut results

Here are the results of the model gut experiment. 

First the visking tubing was taken out of the boiling tube. It was cut open and the middle was poured into a test tube. 

The two liquids were then tested for starch and glucose. 

The inside had starch but the outside did not. 

Next the glucose test

Both inside and outside had equal amounts of glucose. 

This shows that large starch molecules can't travel through the gut wall but small soluble glucose molecules can.