What kind of science teacher of Basic Education would make a student wonders to be a scientist? How have learned science on Basic Education a person that now produces Science. To answer those questions, it was investigated how much and in which way the practice of science teachers of Basic Education had influenced scientists on their professional option. Questionnaires were applied and interviews with scientists currently working on Natural Sciences were taped with the purpose to identify which factors they considered decisive and remarkable on their school trajectory as science students. Any kind of influence of the teachers on the professional option of the scientists was highlighted. The evocation of the memories of these scientists was done trying to detect the importance of their science teachers. Which are the characteristics that make them good teachers on the field? What scientists think about the formation of science teachers? These reports gave clues hinting how some of the interviewees had decided to be scientists on the Natural Sciences field because of or in spite of their science teachers, as well as the influence of other factors in their career option. One expects thus, that this work can bring new subsidies to the field of formation and practices of Science teachers.