A meal of fried fish is digested completely. What does the lipid in it finally break down into?
AGlucose and fructose
BFatty acids and glycerol
CAmino acids and fructose
DFatty acids and glucose
Answer & Solution
Correct answer: B. Fatty acids and glycerol
1. Each class of food breaks down to its own characteristic end products.
2. A lipid is built from fatty acids joined to glycerol, so digestion releases exactly those two.
3. Carbohydrates instead give simple sugars such as glucose and fructose.
4. Proteins give amino acids.
5. So any pairing that mixes a sugar or an amino acid with a fatty acid is combining the products of two different food classes.
_Source: NECTA CSEE 2021 Biology 033, Question 1: Multiple Choice, item (v)_