Which Animals Use Air Sacs to Ventilate Their Lungs

question 26

Multiple Choice

Which animals use air sacs to ventilate their lungs?

• A) reptiles
• B) horses
• C) birds
• D) frogs

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Definitions:

Lipid

A group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins, and others, serving as key components of cell membranes and energy storage.

Steroid

Large family of lipids, including some reproductive hormones, vitamins, and cholesterol.

Phospholipids

A class of lipids that are a major component of all cell membranes, known for their bilayer formation that makes up the plasma membrane's structure.

Plasma Membranes

A double layer of lipids that surrounds the cytoplasm of a cell, controlling the entry and exit of materials.