Question

the model shows the chemical structures of lactose and sucrose.
lactose ( ce{c_{12}h_{22}o_{11}} )
sucrose ( ce{c_{12}h_{22}o_{11}} )
select the true statements.
sucrose and lactose have different chemical structures.
the monosaccharides in sucrose are fructose and glucose.
the monosaccharides in lactose are galactose and glucose.
sucrose and lactose have the same chemical formula.

Explanation:

1. From the chemical structures shown, lactose is formed from galactose and glucose, while sucrose is formed from glucose and fructose, so their structures differ.
2. The diagram of sucrose clearly shows it is made of glucose and fructose monosaccharides.
3. The diagram of lactose clearly shows it is made of galactose and glucose monosaccharides.
4. The chemical formula for both lactose and sucrose is given as \( C_{12}H_{22}O_{11} \), so they have the same formula.

Answer:

• Sucrose and lactose have different chemical structures.
• The monosaccharides in sucrose are fructose and glucose.
• The monosaccharides in lactose are galactose and glucose.
• Sucrose and lactose have the same chemical formula.