What Protects the Mucosal Surfaces of the Gastrointestinal and Respiratory

question 23

Multiple Choice

What protects the mucosal surfaces of the gastrointestinal and respiratory tracts by inhibiting the adherence of pathogens to host cell surfaces?

• A)IgA
• B)IgD
• C)IgE
• D)IgG
• E)IgM

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Definitions:

Sulphur Dioxide

A toxic gas with a pungent, irritating smell, commonly resulting from the burning of fossil fuels and is a significant pollutant in the atmosphere.

Sulphuric Acid

A highly corrosive strong mineral acid with the molecular formula H2SO4, used in a wide variety of industrial processes.

Acid Deposition

The falling of acids and acid-forming compounds from the atmosphere to the Earth's surface, often as rain, snow, or dust, having harmful effects on ecosystems, structures, and human health.

Tar Sand Oil

A viscous form of petroleum found in sand deposits, which requires intensive extraction and processing methods.