Maltose consists of which one of the following:a. β - Glucose and β - Galactoseb. α - Glucose and α - Fructosec. α - Sucrose and β - Glucosed. Glucose and Glucose

The correct answer is D. Glucose and Glucose.
Maltose is a disaccharide sugar composed of two glucose molecules. It is commonly known as malt sugar and is formed during the breakdown of starch in the process of digestion or fermentation. Maltose is classified as a reducing sugar because it has a free aldehyde group in its structure, which can participate in oxidation reactions.
Structure of Maltose:
• Maltose consists of two glucose molecules linked by an α-1,4 glycosidic bond. This bond is formed between the hydroxyl group of carbon 1 on one glucose molecule and the hydroxyl group on carbon 4 of the second glucose molecule.
Why Not the Other Options?
• a. β - Glucose and β - Galactose: This describes lactose, not maltose. Lactose is composed of β - Galactose and α - Glucose.
• b. α - Glucose and α - Fructose: This describes sucrose, not maltose. Sucrose is a disaccharide composed of glucose and fructose.
• c. α - Sucrose and β - Glucose: This is not a valid combination for any disaccharide. Sucrose is a disaccharide composed of glucose and fructose, not involving β - glucose.
Maltose is made up of two glucose molecules linked by a glycosidic bond, making the correct answer D. Glucose and Glucose.