Polymers

Step 1: Understanding Lactose
- Lactose is a disaccharide composed of two monosaccharide units.
- It is found in milk and is commonly known as milk sugar.
Step 2: Composition of Lactose
- Lactose consists of:
- -D-Galactose (a monosaccharide).
- -D-Glucose (a monosaccharide).
- These two sugars are linked by a glycosidic bond.
Step 3: Conclusion
Lactose is a disaccharide composed of one molecule of -D-Galactose and one molecule of -D-Glucose linked through a glycosidic bond.