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.
Public school elementary teachers must possess a bachelor's degree in elementary education. An elementary license allows a teacher to teach kindergarten through sixth grade in most states. A future teacher must also complete a supervised practicum or student teaching internship.