The diagram illustrates the links between some important molecules and bonds. What do the circles labelled 1, 2 and 3 represent?
- A1: bonds formed by condensation; 2: carbohydrates; 3: lipids
- B1: bonds formed by condensation; 2: lipids; 3: carbohydrates
- C1: bonds formed by hydrolysis; 2: carbohydrates; 3: lipids
- D1: bonds formed by hydrolysis; 2: lipids; 3: carbohydrates