Imagine That a Researcher Has Dissected Out a Single Muscle

question 20

Multiple Choice

Imagine that a researcher has dissected out a single muscle bundle from a triceps muscle biopsy. She sections this bundle and stains it for a variety of muscle-associated proteins. After this staining, when she zooms in on a sarcomere, she notices that a certain protein always dots the periphery along the length of the thin filaments. This protein is MOST likely:

• A)actin.
• B)myosin.
• C)titin.
• D)tropomyosin.
• E)Z protein.

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Definitions:

Distal Stimuli

Objects or events in the external world that provide information to the sensory organs, leading to perception.

Neural Synchrony

The simultaneous firing of neurons in different parts of the brain, which is believed to be crucial for various cognitive functions, including attention and perception.

Vertical Line

A straight line that runs up and down, perpendicular to a horizontal line.

Attributes

Qualities or features regarded as inherent parts or characteristics of someone or something, defining or identifying aspects.