A few drops of Lugol's iodine solution placed in a beaker of water will turn the water red. A starch solution was poured into a length of dialysis tubing, and the ends were tied. The starch solution was white. The tubing was then dropped into the beaker of iodine solution. After 10 minutes, the white starch solution turned black, and the iodine water remained red. If the dialysis tubing represents a cell membrane in this demonstration, what process is being observed in the changing color of the starch solution? (4 Points) A permeable membrane diffuses chemicals in and out of the cell. A semipermeable membrane will diffuse selected molecules. Iodine can not pass trough the membrane. Starch can easily diffuse through the membrane.

Name the type of chemical that speeds up digestion

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return