Final answer:
The primary components of biofilms include polysaccharides, extracellular DNA, proteins, and lipids.
Step-by-step explanation:
The primary components of biofilms include polymers such as polysaccharides, extracellular DNA, proteins, and lipids. These components make up the extracellular matrix of a biofilm, which provides structure and support to the microbial community. The exact makeup of a biofilm can vary, as different species of bacteria and other microorganisms can be present within the matrix.