Question

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 monicas 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 monicas mouth, which is a lipid.

c the saltine is a combination of carbohydrate and lipid; enzymes or proteins in monicas digestive tract broken down the bonds of the two macromolecules in the saltine.

d the saltine is a carbohydrate, and digestion took place in monicas mouth thanks to enzymes or proteins. the blueprint for these proteins is located on nucleic acids

Explanation:

Saltine primarily contains carbohydrates (starch from flour). Chewing initiates digestion in the mouth via salivary enzymes (proteins like amylase) that break down carbohydrate bonds. Enzymes, being proteins, have their synthesis directed by nucleic acids (blueprints).

Answer:

D. The saltine is a carbohydrate, and digestion took place in Monica's mouth thanks to enzymes or proteins. The blueprint for these proteins is located on nucleic acids