Which statement about this figure is true?
A) The outside of the cell is negatively charged.
B) Sodium ions are moving against their concentration gradient.
C) There are fewer positive charges on the inside of the neuron, so it is more negative.
D) The concentration of potassium ions is higher inside the cell.

Question

Which statement about this figure is true? 
A) The outside of the cell is negatively charged. 
B) Sodium ions are moving against their concentration gradient. 
C) There are fewer positive charges on the inside of the neuron, so it is more negative. 
D) The concentration of potassium ions is higher inside the cell.

Quizplus · Accepted Answer

The figure shows the distribution of positive and negative charges across the membrane of a neuron. There are more negative charges on the inside of the neuron compared to the outside, which makes the inside more negative. This is due to the presence of large negatively charged molecules, such as proteins, inside the cell. Option A is incorrect because the figure does not indicate the charge of the outside of the cell. Option B is incorrect because the figure shows that sodium ions are moving down their concentration gradient (from outside to inside). Option D is incorrect because the figure shows that the concentration of potassium ions is higher outside the cell.

Which Statement About This Figure Is True