What Is the Composition of Lactose

question 18

Multiple Choice

What is the composition of lactose?

• A) two glucose units with a  -1,4'-glycoside bond
• B) one glucose and one fructose unit with a  -glycosidic bond to the 2'carbon of a fructofuranose ring
• C) one galactose and one glucose unit with a  -1,4'-glycoside bond
• D) repeating unit of glucose units joined in a  -1,4'-glycosidic linkage

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