To Increase the Effectiveness of Exchange Surfaces Lining the Lungs

question 52

Multiple Choice

To increase the effectiveness of exchange surfaces lining the lungs and the intestines, evolutionary pressures have

• A) increased the exchange surface area with folds and branches.
• B) increased the thickness of the membranes in these linings.
• C) increased the number of cell layers in these linings.
• D) decreased the metabolic rate of the cells in these linings.
• E) increased the volume of the cells in these linings.

---

Definitions:

Equilibrium Price

The price at which the quantity of a good or service offered by suppliers equals the quantity demanded by consumers.

Shortage

A market condition where the demand for a product exceeds its supply at a particular price, often leading to price increases.

Market Price

Represents the amount of money that a buyer is willing to pay and a seller is willing to accept for a good or service at a particular time.

Shortage

A situation where the demand for a product or service exceeds its supply in a market, often leading to rising prices.