Coarsely chop celery, and slice scallops. Peel and quarter apples.
2
Heat margarine in heavy skillet over high heat and stir fry celery for 2 minutes. Add scallops, sprinkling with juice from half the lemon.
3
Coarsely cut apple pieces into mixture, stirring constantly, for another 2-3 minutes, adding more margarine, if needed. Sprinkle with juice from remaining half of lemon, and serve.