Which Statement Regarding Diffusion of Gases Is True

question 218

Multiple Choice

Which statement regarding diffusion of gases is true?

• A) The rapid rate of diffusion of O₂ in water makes respiration more efficient in water-breathing than in air-breathing animals.
• B) Respiratory surfaces in mammals have a thin fluid film to improve diffusion of gases.
• C) In the lungs, extracellular fluid speeds the movement of O₂ into cells.
• D) The slow rate of diffusion of O₂ in water limits efficiency even in air-breathing mammals.
• E) Exchange of respiratory gases in an insect in which air is carried in tracheoles to air capillaries is less efficient that in a fish gill where there is a countercurrent flow system.

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Definitions:

Leverage

Using debt to increase the return on an investment.

Debt Financing

Raising funds for business activities by borrowing money, typically through loans or by issuing bonds.

Return on Total Assets

A financial ratio that measures a company's profitability relative to its total assets, indicating how efficiently it uses those assets to generate profit.

Net Income

The total earnings of a company after subtracting all expenses from revenue.