Biofilms can contain which of the following:

• A. Bacterial cells
• B. Proteins
• C. Archaeal cells
• D. Polysaccharides
• E. All of the choices are correct

Answer: (E)

Verified step by step guidance

1. Begin by understanding what a biofilm is: a biofilm is a structured community of microbial cells enclosed in a self-produced polymeric matrix and adherent to an inert or living surface.
2. Consider the components that typically make up a biofilm. Biofilms are known to contain a variety of microorganisms, including bacterial cells and archaeal cells, which are both types of prokaryotic cells.
3. Recognize that biofilms also contain extracellular polymeric substances (EPS), which are primarily composed of polysaccharides, proteins, and nucleic acids. These substances help in the structural integrity and function of the biofilm.
4. Evaluate each option given in the problem: Bacterial cells, Proteins, Archaeal cells, and Polysaccharides. All these components are commonly found in biofilms.
5. Conclude that since biofilms are complex structures containing various microorganisms and substances, all the choices provided in the problem are correct.