As a Result of Testing an Experimental Drip on a Vertebrate

question 67

Multiple Choice

As a result of testing an experimental drip on a vertebrate cell, you notice that the cell cortex becomes more fluid, and although the cell remains strong, it loses its ability to move. Based on this evidence, you correctly conclude that the drug most directly affected:

• A) myosin.
• B) β -tubulin.
• C) α -tubulin.
• D) actin filaments.
• E) intermediate filaments.

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Definitions:

Supraorbital Foramen

An opening or notch in the frontal bone of the skull, above the eye orbit, through which the supraorbital nerve and vessels pass.

Infraorbital Foramen

An opening located below the orbit (eye socket) on the skull through which nerves and blood vessels pass.

Foramen Magnum

The large opening at the base of the skull through which the spinal cord passes to connect with the brain.

Vertebral Arteries

Arteries that supply blood to the upper spine, brainstem, cerebellum, and posterior part of the brain.