Digesting starch

Year 7 have been learning about digestion this week. We have discussed how enzymes can break down our food.

This morning we did an experiment using amylase to digest starch.

We measured our starch:

And filled two spotting tiles with iodine:

Then we got our enzyme - amylase. Some groups used 5ml and others 10ml. When we were ready we poured the amylase into the starch solution and started the stopwatch:

We tested the solution for starch every 20 seconds:

We found the starch with 10ml of enzyme had digested before the one with 5ml of enzyme.