Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present. a) the saltine is made of flour, a carbohydrate. the flour dissolved in the saliva found in monica's mouth, which is mostly water. b) the saltine is mostly flour, a carbohydrate. the bonds of the carbohydrate were broken down by an enzyme in monica's mouth, which is a protein. c) the saltine is a combination of carbohydrate and lipid; enzymes or proteins in monica's digestive tract broken down the bonds of the two macromolecules in the saltine. d) three macromolecules are represented. the saltine is a carbohydrate. nucleic acids direct digestion. digestion took place in monica's mouth to enzymes or proteins.