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.
In order to work in a public school system as an early childhood teacher, one must become licensed to teach preschool through third grade. Each state has its own licensure guidelines, which usually require a bachelorâs degree, student teaching experience, and passing grades on standardized teaching exams.