A Secondary Pollutant

question 21

Multiple Choice

A secondary pollutant

• A) is less destructive than a primary pollutant.
• B) causes destruction on buildings but not on human beings.
• C) is produced by chemical reactions in the air.
• D) has a shorter lifetime in the atmosphere than that of a primary pollutant.

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Definitions:

Plasma Membrane

The biological membrane that separates the interior of all cells from the outside environment, protecting the cell and controlling movement of substances in and out.

Hydrophobic Region

A part of a molecule that is repelled by water and tends to be nonpolar.

Phospholipids

A class of lipids that are a major component of all cell membranes, essential for cellular function.

Polar (Hydrophilic) Region

A part of a molecule that has a tendency to interact with water through hydrogen bonding or electrostatic interaction, making it soluble in water.