Final answer:
The process of starch digestion primarily involves breaking down starch into maltose using amylase in the duodenum, and then further breaking down maltose into glucose with the enzyme maltase from the small intestine.
Step-by-step explanation:
The process of starch digestion involves breaking down starch into simpler forms that can be absorbed into the bloodstream. After the initial breakdown by amylase in the mouth, the next significant step occurs in the duodenum, where further enzymatic action continues. Pancreatic amylase breaks down starch into smaller molecules called dextrins and eventually into a disaccharide known as maltose. Enzymes on the brush border of the small intestine, including maltase, then act on these disaccharides. Maltase, specifically, breaks down maltose into two molecules of glucose, which are then ready to be absorbed by the body. The correct option that shows the process involved in starch digestion is therefore B. Starch to maltose to glucose.