Structures that form the voltage sensors of K+ channelsGroup of answer choicesare embedded in the cell membrane.extend into the intracellular space.extend into the extracellular space.are embedded in the cell membrane but extend into the extracellular space when the membrane is depolarized.are located within the channel pore.
Question
Structures that form the voltage sensors of K+ channelsGroup of answer choicesare embedded in the cell membrane.extend into the intracellular space.extend into the extracellular space.are embedded in the cell membrane but extend into the extracellular space when the membrane is depolarized.are located within the channel pore.
Solution
The structures that form the voltage sensors of K+ channels are embedded in the cell membrane. These voltage sensors are part of the protein structure of the channel and are sensitive to changes in the electrical potential across the membrane. When the membrane potential changes, these voltage sensors undergo a conformational change, which leads to the opening or closing of the channel. Therefore, they do not extend into the intracellular or extracellular space, nor are they located within the channel pore.
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