What is the identity of the disaccharide below?

• A. Cellulose.
• B. Lactose.
• C. Chitin.
• D. Maltose.
• E. Sucrose.
• F. Cellobiose.
• G. Glycogen.

Answer: (D)

Verified step by step guidance

1. Examine the structure of the disaccharide shown in the image. Identify the two monosaccharide units that are linked together.
2. Notice the glycosidic bond between the two monosaccharide units. This bond is an alpha-1,4 linkage, which is characteristic of certain disaccharides.
3. Identify the monosaccharide units as glucose molecules. The presence of two glucose units linked by an alpha-1,4 glycosidic bond is a key feature.
4. Recall that maltose is a disaccharide composed of two glucose units connected by an alpha-1,4 glycosidic bond.
5. Based on the structural analysis, determine that the disaccharide in the image is maltose, as it matches the structural characteristics of maltose.