Question

1. a. what is selective permeability? (1pt) b. what can move into the cell and what cannot move into the cell in this photo? (1pt) 4. when the egg was placed in the corn syrup solution, in which direction did the water molecules move (into or out of the cell), and how do you know? (2pts)

Explanation:

3a. Selective permeability is the property of a membrane that allows certain substances to pass through while restricting others. It is crucial for maintaining cell - function and homeostasis by controlling the movement of molecules such as ions, nutrients, and waste products.
3b. Without seeing the photo clearly, in general, small non - polar molecules like oxygen and carbon dioxide can pass through the cell membrane easily by simple diffusion. Large polar molecules like glucose usually require transport proteins to enter the cell, and very large molecules or particles cannot enter without processes like endocytosis.

1. When an egg is placed in corn syrup solution, which is hypertonic compared to the egg's interior, water molecules move out of the cell. This is based on the principle of osmosis, where water moves from an area of lower solute concentration (inside the egg) to an area of higher solute concentration (the corn syrup solution).

Answer:

3a. Selective permeability is the ability of a membrane to allow certain substances to cross while blocking others.
3b. Small non - polar molecules may enter; large polar molecules and large particles may not enter (without seeing the photo precisely).

1. Water molecules move out of the cell because the corn syrup solution is hypertonic and water moves from an area of lower solute concentration (inside the egg) to an area of higher solute concentration (corn syrup) by osmosis.