Action potential

Froggy Jumps

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Esraa El-sayed

Egypt

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Action potential


Froggy Jumps Action potentialVersion en ligne Test your understanding par Esraa El-sayed 1 What do voltage meters indicate in relation to cell membranes? a The electrical potential difference b The physical size of the cell c The age of the cell 2 What does the term "hyperpolarization" refer to? a The increase in cell size b The increase in negative charge inside the cell c The decrease in nutrient absorption 3 What are microelectrodes used for? a To measure electrical potential in cells b To measure temperature c To introduce medication 4 What happens during the depolarization phase of an action potential? a Sodium ions exit the cell b Calcium ions are released c Sodium ions enter the cell 5 Why is potential difference important for cell function? a It is crucial for transmitting electrical signals b It allows cells to grow larger c It prevents cell damage 6 How do nerve cells use action potentials? a To absorb nutrients b To regulate blood flow c To transmit signals rapidly 7 How is potential difference typically measured? a In joules b In liters c In millivolts 8 What is the relative permeability in the GHK equation used for? a To calculate ion flow across the membrane b To measure temperature changes c To assess nutrient levels 9 What is the typical resting potential difference across a neuronal membrane? a 0 mV b -90 mV c -70 mV