Maltose is made up of

Options

A. `alpha`-D-glucose
B. D-fructose
C. `alpha`-D-glucose and `beta`-D-glucose
D. glucose and fructose

Answer

To determine what maltose is made up of, we can follow these steps:

### Step 1: Understand the Structure of Maltose
Maltose is classified as a disaccharide, which means it is composed of two monosaccharide units.

### Step 2: Identify the Monosaccharides
The two monosaccharides that combine to form maltose are both glucose molecules. Specifically, they are both in the alpha form of glucose (α-D-glucose).

### Step 3: Hydrolysis of Maltose
When maltose undergoes hydrolysis (a chemical reaction involving the addition of water), it breaks down into its constituent monosaccharides. In this case, hydrolysis of maltose yields two molecules of α-D-glucose.

### Step 4: Confirm the Options
Looking at the options provided:
- Alpha D Glucose
- D Fructose
- Alpha D Glucose and Beta D Glucose
- Glucose and Fructose

The correct answer is "Alpha D Glucose" since maltose is made up of two units of α-D-glucose.

### Conclusion
Thus, maltose is made up of two units of α-D-glucose.

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