Answer 1: While active transport requires energy and work, passive transport does not. There are several different types of this easy movement of molecules. It could be as simple as molecules moving freely such as osmosis or diffusion.
Answer 2: A hypertonic salt solution has a higher concentration of solutes than a blood cell. Explain what happens when a blood cell is placed in a hypertonic salt solution. Because the blood is less hypertonic, water would rush out of blood cells into the solution shrinking the blood cells or shirviling it.
Answer 3: When you add sugar to a bowl of strawberries, it creates a syrup.
