Diffusion lab

In Science we tried to see how the membranes work in a cell. When they’re a corn starch in a bag and preamble bag, we put the bag in a beaker with iodine. Iodine will detect sugar, cornstarch, and will turn it into a purple color. At first nothing happened but after 15 the corn starch in the bag changed color. It was brown and dark brown, meaning that the iodine had reached the cornstarch. This is similar to a cell membrane when it decides what stays in and what stays out. The bag being the membrane and the sugar in the bag being the organelles shows how the membrane works. The lab was exciting, and fun. (Caution the iodine is poisonous if it touches the eye or if drank. can be found in stores such as target)