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.
Job Description. As a preschool teacher, you'll help educate and watch over children who are 3-5 years old. You'll be expected to interact with an entire classroom at one time, but when necessary, you'll give individual attention to each student. Your end goal is to prepare your students to enter kindergarten.ob Description. As a preschool teacher, you'll help educate and watch over children who are 3-5 years old. You'll be expected to interact with an entire classroom at one time, but when necessary, you'll give individual attention to each student. Your end goal is to prepare your students to enter kindergarten.