Which of the following statements is TRUE with regard to this animation?

Question

Potassium ions are transported down their concentration gradient.
Sodium ions are transported down their concentration gradient.
The cell does not expend ATP.
Both sodium and potassium ions are transported against their concentration gradients.
The cell is not expending energy.

Answer 1

To determine which statement is true with regard to the animation, we need to analyze the transport mechanisms involved for potassium (K+) and sodium (Na+) ions.

1. Potassium ions are transported down their concentration gradient. - This statement is likely false in the context of active transport.

2. Sodium ions are transported down their concentration gradient. - This statement is also likely false in the context of active transport.

3. The cell does not expend ATP. - This statement is generally false if the animation is depicting active transport.

4. Both sodium and potassium ions are transported against their concentration gradients. - This statement is true if the animation shows a process like the sodium-potassium pump, which actively transports Na+ out of the cell and K+ into the cell against their respective concentration gradients.

5. The cell is not expending energy. - This statement is false if the transport involves ATP expenditure.

Based on these analyses, the TRUE statement is likely: "Both sodium and potassium ions are transported against their concentration gradients."