Diffusion is the spontaneous tendency of a substance to move from an area with high concentration to an area of low concentration. Since the concentration of glucose and starch is higher inside the artificial cell, it is expected that the glucose and starch molecules would move out of the artificial cell to reach equilibrium in concentration. This movement will be manifested by the change in the color of the outside solution due to the presence of the starch indicator.

Incorrect answer:

(1) carbohydrate synthesis

Carbohydrate synthesis is the process of forming carbohydrate structures. In living organisms, this occurs naturally. For instance, during dark reactions in plants, adenosine triphosphate (ATP) and nicotinamide adenine dinucleotide phosphate (NADPH) are used to convert carbon dioxide into carbohydrate. This is a complex process, thus the setup above cannot represent carbohydrate synthesis.

(2) active transport

Active transport is another type of substance movement across a biological membrane against a concentration gradient with the help of energy and transport proteins. There was no energy input illustrated in this setup.

(4) dehydration

Dehydration refers to the excessive removal of water from the body. Water was not removed from the setup, thus, the illustration does not represent dehydration.