Which of the Following Is Not a True Description of the Transduction

question 31

Multiple Choice

Which of the following is not a true description of the transduction of a stimulus by sensory receptors into signals in the form of action potentials?

• A)Pressure from sound waves bends cilia in specialized hearing cells,causing ion channels in the plasma membrane to open or close and resulting in a change in ion flow that depolarizes or hyperpolarizes the membrane.
• B)Light can cause some molecules to change conformation,which then triggers a cascade of events leading to a change in the cell's membrane.
• C)Molecules in the air travel up the nose to the mucous membranes,where they bend cilia in hair cells,open ion channels,and cause depolarization of the cell membrane.
• D)Na⁺ and H⁺ can flow through sodium and proton channels respectively to directly depolarize the cell membranes of some taste cells,causing the salty or sour taste sensations.
• E)Many types of molecules can bind to a variety of receptors in taste cells,leading to depolarization of the cell membrane and causing the taste sensation of bitterness.

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