The Body's First Line of Defense Against the Invasion of Organisms

question 92

Multiple Choice

The body's first line of defense against the invasion of organisms is

• A)the skin.
• B)chlorination.
• C)white blood cells.
• D)fever.

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Definitions:

Fertilize

The process of a sperm cell joining with an egg cell to initiate the development of a new organism.

Cellular Differentiation

Process and developmental stages by which a cell becomes specialized for a particular function.

Specialized

Adapted or modified for a specific function or purpose.

Gastrulation

Formation of a gastrula from a blastula; characterized by an invagination to form cell layers of a caplike structure.