A biofilm is any group of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular polymeric substances (EPS).
Career Requirements. Kindergarten teachers in public schools are required to have at least a bachelor's degree in education and teacher certification for the state in which they work. Certification typically requires candidates to complete student teaching requirements and pass any required professional exams.
Anyone teaching from kindergarten through high school needs at least a bachelorâs degree, but some school systems now require a masterâs degree. Students who want to teach at the postsecondary level need anything from a bachelorâs degree to a doctorate, depending upon the subject and the college that hires them.