Trace signalling from an adrenaline receptor through a G protein to production of a second messenger.
Tę umiejętność sprawdzają 3 zadania wzorowane na arkuszach IB z lat 2025–2026.
Biologia IBPaper 1A, maj 2026, TZ3wzorowane1 pktzamkniętełatwe (szac.)
Adrenaline binds the membrane receptor shown in a cardiac cell. Which sequence can produce an intracellular response? A. Adrenaline crosses the membrane and is converted directly into ATP B. The G protein copies the receptor gene into cyclic DNA C. Receptor…
Biologia IBPaper 2, maj 2025, TZ1wzorowane3 pktotwarteśrednie (szac.)
Explain how binding of epinephrine can produce a response inside this cell.
Biologia IBPaper 1A, maj 2025, TZ2wzorowane1 pktzamkniętełatwe (szac.)
In this constructed dataset, exercise begins at 0 minutes and epinephrine infusion begins at 25 minutes. Which signalling event can account for the subsequent difference from the control? A. The receptor permanently destroys cyclic AMP B. A receptor activates…