A sticky polysaccharide made by the action of Streptococcus mutans on sucrose is __________.

The sticky polysaccharide produced by the action of the bacterium Streptococcus mutans on sucrose is called glucans. Streptococcus mutans is known for its role in dental caries as it metabolizes sugars, particularly sucrose, to produce acid. The acid can demineralize tooth enamel, leading to cavities. In addition, the glucans formed by this bacterium contribute to the adherence of the bacteria to tooth surfaces, forming a biofilm known as dental plaque. These polysaccharides increase the viscosity of the plaque and make it more difficult to remove through regular brushing and flossing, thereby promoting tooth decay. Glucans are essential for the pathogenicity of Streptococcus mutans in the oral environment, enhancing its ability to colonize tooth surfaces and evade the host's immune response.