True/False: The black arrow on the graph is pointing to threshold which is the membrane voltage at which voltage-gated Na+ channels open.
True
False.
The black arrow on the graph is pointing to the resting membrane potential, which is the voltage of the cell membrane when it is not being stimulated. The threshold is the membrane voltage at which an action potential is initiated, and it is typically more positive than the resting membrane potential. Voltage-gated Na+ channels do open at threshold, but the black arrow on the graph is not indicating this specific point.
False. The black arrow on the graph is not necessarily pointing to the threshold. The threshold refers to the membrane voltage at which an action potential is initiated in a neuron. Voltage-gated Na+ channels do indeed play a key role in the generation of an action potential, but they open at a specific voltage higher than the threshold.
To determine the accuracy of the statement, we need to locate the threshold on the graph. The threshold is typically depicted as a specific voltage level, usually marked with a dotted line or a different color on the graph. By observing the graph, we can identify where the voltage reaches the threshold and compare it to the position of the black arrow. If the arrow aligns with the threshold, the statement would be true; otherwise, it would be false.