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Similar to the firing of a neuron in the brain channelrhodopsin triggers an action potential. What specifically causes an action potential? A. An action potential is triggered when a voltage difference is established across the plasma membrane. B cell. B. An action potential is triggered when positively charged ions move into the C. An action potential is triggered when light is absorbed by a pigment molecule. D. An action potential is triggered when a G -protein binds to a receptor molecule.

Question

Similar to the firing of a neuron in the brain channelrhodopsin triggers an action potential. What specifically causes an action potential? A. An action potential is triggered when a voltage difference is established across the plasma membrane. B cell. B. An action potential is triggered when positively charged ions move into the C. An action potential is triggered when light is absorbed by a pigment molecule. D. An action potential is triggered when a G -protein binds to a receptor molecule.

Similar to the firing of a neuron in the brain channelrhodopsin triggers an action potential. What specifically causes an action potential? A. An action potential is triggered when a voltage difference is established across the plasma membrane. B cell. B. An action potential is triggered when positively charged ions move into the C. An action potential is triggered when light is absorbed by a pigment molecule. D. An action potential is triggered when a G -protein binds to a receptor molecule.

Solution

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RaquelProfessional · Tutor for 6 years

Answer

The correct answer is:<br /><br />B. An action potential is triggered when positively charged ions move into the cell.<br /><br />An action potential occurs when there is a rapid influx of positively charged ions, such as sodium ions (Na+), into the neuron, leading to a change in the electrical charge across the plasma membrane. This depolarization initiates the action potential, allowing it to propagate along the neuron.
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