Multicellular Organisms Must Keep Their Cells Awash in an "Internal

question 53

Multiple Choice

Multicellular organisms must keep their cells awash in an "internal pond" because

• A) their membranes will crystallize if not in contact with interstitial fluid.
• B) an aqueous medium is needed for the cellular exchange of nutrients, gases, and wastes.
• C) this prevents the loss of water due to osmosis.
• D) their cells need to be protected from dissolved nitrogen gas in the blood.
• E) terrestrial organisms have not adapted to life in dry environments.

---

Definitions:

Balance of Trade

The difference in value between a country's imports and exports over a given period, indicating trade surplus or deficit.

Tariffs

Taxes imposed by a government on imported or exported goods to regulate trade, often used to protect domestic industries from foreign competition.

Merchandise Trade Deficit

The situation that occurs when a country imports more goods than it exports, leading to a negative trade balance.

European Union

A political and economic union of 27 European countries that are located primarily in Europe, aiming to ensure peace, prosperity, and freedom of movement.