The Basic Structural and Functional Units of an Organism, Such

question 22

Multiple Choice

The basic structural and functional units of an organism, such as plant or animal, is the

• A) organ.
• B) cell.
• C) organelle.
• D) organ system.
• E) tissue.

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Definitions:

Bronchioles

Small passages in the lungs that lead from the bronchi to the alveolar sacs.

Airways

The tubes through which air flows from the nose or mouth to the lungs, including the trachea, bronchi, and bronchioles.

Bronchial Tubes

The numerous smaller branches of the bronchus within the lungs, which serve to carry air further into the respiratory system.

Spent Air

Air that has been used in a process and is expelled, often devoid of oxygen or contaminated with pollutants.