What Happens to Nutrient Macromolecules in an Animal's Digestive Tract

question 64

Multiple Choice

What happens to nutrient macromolecules in an animal's digestive tract?

• A) They are absorbed whole and are then broken down into monomers within cells that ultimately use them.
• B) Proteins and nucleic acids are digested into monomers before absorption; energy-storage macromolecules (starch and fat) are absorbed whole.
• C) The digestive breakdown of macromolecules determines the monomers that are immediately needed and therefore produced.
• D) Nutrient macromolecules are digested into monomers before absorption.