All three statements are correct. Statement 1 is correct: Biofilms can form on metals, plastics, medical implants, kitchen counters, contact lenses, human and animal tissue, including medical devices. Statement 2 is correct: Biofilms are a constant concern in food processing environments, forming on equipment surfaces and being tough to remove. Statement 3 is correct: Bacteria form biofilms (a matrix) during infection that shield them from antibiotics, helping them survive harsh conditions — thus they can exhibit antibiotic resistance.