Keratins Are Intermediate Filaments That

question 17

Multiple Choice

Keratins are intermediate filaments that ...

• A) are localized inside the nucleus.
• B) are composed of 50% type I and 50% type II keratin proteins.
• C) are bundled in the epidermis to make cells more flexible.
• D) anchor the intermediate filament network at the adherens junctions.
• E) All of the above.

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Definitions:

Sympathetic Nervous System

Part of the autonomic nervous system that prepares the body for rapid responses to stressors, activating the fight-or-flight response.

Somatic

Relating to or affecting the body, especially as distinct from the mind.

Parasympathetic

The part of the autonomic nervous system that conserves energy by slowing the heart rate and increasing digestive activities.

Gonads

Sex glands; secrete hormones that regulate sexual development and behavior as well as reproduction.