Which Portal of Entry Is the Most Commonly Used by Pathogens

question 76

Multiple Choice

Which portal of entry is the most commonly used by pathogens?

• A)urogenital
• B)gastrointestinal
• C)respiratory
• D)skin
• E)They are all equally used as portals.

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Definitions:

Natural Selection

A fundamental mechanism of evolution, where organisms better adapted to their environment tend to survive and produce more offspring.

Catastrophism

The theory that the Earth has been shaped by sudden, short-lived, violent events, possibly worldwide in scope, contrasting with uniformitarianism which emphasizes gradual changes.

Mitosis

A kind of cell division that produces new cells having exactly the same number of chromosome pairs, and hence copies of genes, as the parent cell.

Cell Division

The process by which a parent cell divides into two or more daughter cells, critical for growth, reproduction, and repair in organisms.