The answers are as follows:
1. Carbohydrate: glucose, sucrose, monosaccharides, maltose, galactose, starch and glycogen are related to carbohydrates.
2. Protein: Quaternary structure, oligopeptides and enzymes are related to protein.
3. Lipids: triglycerides, fat, eicosanoids, cholesterol, oils and steroids are related to lipids.