Explain ATP-dependent sodium and potassium transport and why a resting neuron has a negative internal potential.
Tę umiejętność sprawdzają 3 zadania wzorowane na arkuszach IB z lat 2023–2026.
Biologia IBPaper 2, maj 2026, TZ1wzorowane16 pktotwartetrudne (szac.)
Membranes support water balance, electrical signalling and energy conversion. (a) Outline what happens to cells in a piece of plant tissue transferred to a hypotonic solution. (b) Describe the establishment and maintenance of a resting membrane potential in a…
Biologia IBPaper 2, maj 2024, TZ1wzorowane3 pktotwarteśrednie (szac.)
The model labels one embedded molecule M. Explain how molecules of this type function in sodium–potassium pumps.
Biologia IBPaper 1, maj 2023, TZ1wzorowane1 pktzamkniętełatwe (szac.)
In establishing the ionic gradients associated with a neuronal resting potential, what is the action of the sodium–potassium pump? A. It exchanges sodium outwards for potassium inwards B. It moves both ions only into the neuron C. It converts sodium ions into…