BCH101intermediate
Match each carbohydrate to its primary description: Carbohydrates: 1. Glycogen 2. Cellulose 3. Lactose Descriptions: A. Branched polysaccharide used for energy storage in animals B. Fibrous structural polysaccharide found in plant cell walls C. Disaccharide composed of glucose and galactose
Answer
1 - A, 2 - B, 3 - C
Explanation
### The pairs
| Item | Matches | Why |
|---|---|---|
| Glycogen | Branched glucose storage polysaccharide in animals | Its branching allows stored glucose units to be accessed at many chain ends. |
| Cellulose | Structural glucose polymer in many plant cell walls | Its linked glucose units form strong fibers that support plant tissues. |
| Lactose | Disaccharide composed of glucose and galactose | Lactose contains one glucose and one galactose joined by a glycosidic linkage. |
### Terms
- **Disaccharide**: a carbohydrate made of two monosaccharide units.
- **Glycosidic linkage**: a covalent bond connecting sugar units.
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