Which mnemonic stands for 'Sodium in, potassium out'?

Prepare for the Clinical Chemistry Numericals Test. Study with comprehensive questions, each with detailed explanations. Boost your confidence and excel on your exam!

Multiple Choice

Which mnemonic stands for 'Sodium in, potassium out'?

Explanation:
The key idea is the direction of ion movement by the sodium–potassium pump. This pump uses energy to move ions against their gradients: three sodium ions are pushed out of the cell and two potassium ions are pulled in. A common mnemonic to remember this is Potassium in, Sodium out, which is abbreviated PISO. If you were aiming to recall Sodium in, Potassium out, the natural mnemonic would be SIPO, which isn’t among the options. So the given mnemonic reflects the opposite direction of ion movement from what the question states, while the actual pump action is Na+ out and K+ in.

The key idea is the direction of ion movement by the sodium–potassium pump. This pump uses energy to move ions against their gradients: three sodium ions are pushed out of the cell and two potassium ions are pulled in. A common mnemonic to remember this is Potassium in, Sodium out, which is abbreviated PISO. If you were aiming to recall Sodium in, Potassium out, the natural mnemonic would be SIPO, which isn’t among the options. So the given mnemonic reflects the opposite direction of ion movement from what the question states, while the actual pump action is Na+ out and K+ in.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy