animal milk is a natural source of the disaccharide lactose. the monosaccharides galactose and glucose…

animal milk is a natural source of the disaccharide lactose. the monosaccharides galactose and glucose combine to form lactose, which gives animal milk its sweet flavor.\nthe model shows the chemical structures of lactose and sucrose.\ncompare the chemical structures of lactose and sucrose.\n| | lactose | sucrose |\n|--|--|--| \n| has 12 carbon and 11 oxygen atoms | | |\n| is a disaccharide | | |\n| contains the monosaccharide fructose | | |

animal milk is a natural source of the disaccharide lactose. the monosaccharides galactose and glucose combine to form lactose, which gives animal milk its sweet flavor.\nthe model shows the chemical structures of lactose and sucrose.\ncompare the chemical structures of lactose and sucrose.\n| | lactose | sucrose |\n|--|--|--| \n| has 12 carbon and 11 oxygen atoms | | |\n| is a disaccharide | | |\n| contains the monosaccharide fructose | | |

Answer

Explanation:

Step1: Analyze carbon and oxygen atoms

The chemical formula of lactose is $C_{12}H_{22}O_{11}$ and of sucrose is $C_{12}H_{22}O_{11}$. Both have 12 carbon and 11 oxygen atoms.

Step2: Determine saccharide type

Lactose is formed by galactose and glucose, and sucrose is formed by glucose and fructose. Both are disaccharides.

Step3: Identify monosaccharide components

Lactose is composed of galactose and glucose, while sucrose contains glucose and fructose. So only sucrose contains fructose.

Answer:

lactose sucrose
has 12 carbon and 11 oxygen atoms √ √
is a disaccharide √ √
contains the monosaccharide fructose √