Hair Cells in the Vertebrate Ear Are Responsible for Transducing

question 28

Multiple Choice

Hair cells in the vertebrate ear are responsible for transducing sound pressure waves. What causes ion channels in the hair cell membrane to open?

• A) a chemical ligand binds to the ion channel
• B) light is absorbed by a molecule in the membrane
• C) the cell membrane reaches a threshold voltage
• D) the bending of hairlike projections on the hair cells

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