Why Are Elephants Better "Snorkelers" Than Humans, in Deep Water

question 34

Multiple Choice

Why are elephants better "snorkelers" than humans, in deep water?

• A) Humans possess dense connective tissue that is attached to the surface of the lungs to the surface of the chest cavity, resulting in fragile blood vessels at the surface of the lungs.
• B) Elephants possess dense connective tissue that is attached to the surface of the lungs to the surface of the chest cavity, strengthening the blood vessels at the surface of the lungs.
• C) Elephants can hold their breath longer than humans under water.
• D) Elephants have a larger lung capacity than humans.
• E) None of the above

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Definitions:

Simple Diffusion

The movement of molecules from an area of higher concentration to an area of lower concentration without the need for energy input or assistance of membrane proteins.

Cellular Membrane

The cellular membrane, or plasma membrane, is the biological membrane that separates the interior of all cells from the outside environment, controlling the movement of substances in and out of cells.

Exocytosis

The active transport of materials out of the cell by fusion of cytoplasmic vesicles with the plasma membrane. Compare with endocytosis.

Plasma Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, responsible for controlling the passage of substances in and out of the cell.