Ramaprasad (1983) defined feedback as information about the gap between actual performance level and the reference level, which is subsequently used to alter that gap. Feedback, therefore, needs to be meaningful, understood and correctly acted upon. Tutors not only have to give feedback; they should really evaluate how effective their feedback has been. This study reports the findings of semi-structured interviews with third year biology students on their utilization of tutor feedback. We show that students use feedback in six ways. Four specific uses were (a) to enhance motivation; (b) to enhance learning; (c) to encourage reflection; and (d) to clarify understanding. Two further forms of usage were, firstly, to enrich their learning environment and, secondly, to engage in mechanistic enquiries into their study. The findings are discussed in the context of current literature and specific recommendations are given as to how the impact of tutors' feedback could be enhanced.