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Questions and Answers
Which type of ion channels are regulated by chemical messengers called ligands?
Which type of ion channels are regulated by chemical messengers called ligands?
- Ligand-gated ion channels (correct)
- ATP-gated ion channels
- Mechanically-gated ion channels
- Voltage-gated ion channels
What is the definition of excitability?
What is the definition of excitability?
- The ability of a cell to regulate ion concentration
- The ability of a cell to produce ATP
- The ability of a cell to divide and reproduce
- The ability of a cell to send and receive electrical signals across the plasma membrane (correct)
Which ions move into the cell during excitation?
Which ions move into the cell during excitation?
- Potassium and calcium
- Potassium and sodium
- Chloride and calcium
- Sodium, chloride, and calcium (correct)
What type of ion channels are regulated by changes in charge in the surrounding environment?
What type of ion channels are regulated by changes in charge in the surrounding environment?
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Which type of ion moves out of the cell during excitation?
Which type of ion moves out of the cell during excitation?
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