Question

7) Salty snacks like peanuts and pretzels can often be found for free at gatherings where beverages are for sale. Vendors hope that the salty snacks will make consumers thirsty so they will purchase something to drink. Why does this work? A) The salty snacks makes people restless, so they desire some water to make them calmer. B) The salt in the body creates a hypertonic solution around cells, which causes water to diffuse out of cells and make them crenate. C) The salt in the body creates a hypotonic solution around cells, which causes water to diffuse into cells and make them cytolyse. D) The salt in the body creates an isotonic solution around cells, which causes water to diffuse into and out of cells which makes them unstable.

Answer 1

B.
The loss of water from the cells includes thirst

Answer 2

The salt in the snacks, such as pretzels, and peanuts, creates a hypertonic solution around the cells. The hypertonic solution can be defined as the solution which has greater concentration of solutes outside the cell. In such solution, the water moves out from the cell to the outside where the water concentration is less. The cell will shrink and crenate. This will make the people thirsty as they will be dehydrated.

Hence, the correct answer is 'Option B - The salt in the body creates a hypertonic solution around cells, which causes water to diffuse out of cells and make them crenate'.