Daf Yomi - Yoma 84 - Question

Question regarding biblical prohibitions on Shabbos and Yom Tov

The Mishna states that if one feels pain in his throat, it is permitted to place medicine in his mouth on Shabbos, as saving a life supersedes the Shabbos prohibitions. The Gilyon Maharsha wonders what possible Shabbos prohibition could be violated in such a situation. Rav Zalman Leff, the Rosh Kollel from Boston noted that a similar question arises in the Gemara in Rosh Hashanah 33. The Mishnah there states that one cannot move a boulder which is resting on a shofar. Rabbeinu Chanannel states explicitly that this would be biblically forbidden. There too we must wonder what biblical prohibition is involved in moving a boulder on Yom Tov.