Question

lewis, hezekiah
macromolecule test
examine the diagram showing three major organic molecules.
diagram: digestion and absorption leads to carbohydrates, proteins, lipids. below them: w, x, y, z, with arrows to cellular respiration (producing atp).
what terms are represented by the letters y and z?

• amino acids and glycerols
• fatty acids and glycerols
• glucose and glycogen
• sugars and starches

Explanation:

To determine what Y and Z represent, we analyze the digestion of lipids. Lipids (fats) are broken down into fatty acids and glycerol during digestion. Let's evaluate the options:

• Amino acids are the breakdown products of proteins (not lipids), so "amino acids and glycerols" is incorrect.
• Lipids are digested into fatty acids and glycerol, so this option matches the breakdown of lipids.
• Glucose is a breakdown product of carbohydrates, and glycogen is a storage form of carbohydrates (not lipid breakdown products), so "glucose and glycogen" is incorrect.
• Sugars and starches are types of carbohydrates (not lipid breakdown products), so "sugars and starches" is incorrect.

Answer:

B. fatty acids and glycerols