Usually social control and acceptance of science and technology is thought to be a separate or even confronting thing. But this paper aims to go beyond this simple and dichotomous thinking. Rather, this paper argues that social control and acceptance of science and technology can be combined altogether organically. In other words, this paper argues that social control of a particular science and technology has functional effects to the acceptance of that science and technology. Social control of a particular science and technology is a signal that something is going wrong; it reallocates attention and enhances social awareness; it evaluates ongoing activity; and it alters this activity in various ways to secure a sustainable future. In order to prove this functional hypothesis, this paper tries a case study of biotechnology from a perspective of sociology of science and technology. Especially social controversies around genetically modified organisms(GMOs) and embryo cloning in Korea are analysed deeply. As a conclusion, this paper proposes some policy implications of this study.