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.
Six Weeks. The education requirements for preschool teachers varies by state, the type of preschool and employer. The minimum requirement is a high school diploma and a certificate in early childhood education. The credential can take as little as six weeks to complete, as shown by Ashworth College.