Why iodine turns blue black in the presence of starch

amylosee in starch is responsible for the formation of a deep blue colour in the presence of iodine.

Hope this helps

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

can you give me more to work here with plzs and you