What Is the Function of Keratin, an Important Intermediate Filament

question 37

Multiple Choice

What is the function of keratin, an important intermediate filament?

• A) reinforces moveable joints
• B) enables the heart to contract as a unit
• C) provides nutrients to neural cells of the brain and spinal cord
• D) imparts impermeability to the skin and the ability to withstand mechanical stress

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Definitions:

Genus

A term in taxonomy representing a higher classification grouping that consists of similar species.

Species

A congregation of organisms that resemble each other and can engage in gene exchange or reproduction.

Concrete

Describes a material composed of cement, water, sand, and gravel, used in building construction or a concept having a physical existence; tangible.

Physical Object

An entity that exists in the physical world and can be perceived by the senses.