Glucose is:

Options

A. monosaccharide
B. disaccharide
C. trisaccharide
D. polysaccharide

Answer

To determine whether glucose is a monosaccharide, disaccharide, trisaccharide, or polysaccharide, we can follow these steps:

### Step 1: Understand the definitions
- **Monosaccharides** are the simplest form of carbohydrates that cannot be hydrolyzed into simpler sugars. They typically have the general formula \( C_n(H_2O)_n \) where \( n \) is usually between 3 to 7.
- **Disaccharides** consist of two monosaccharides linked together.
- **Trisaccharides** consist of three monosaccharides linked together.
- **Polysaccharides** are large molecules made up of many monosaccharides.

### Step 2: Identify the molecular formula of glucose
- The molecular formula of glucose is \( C_6H_{12}O_6 \).

### Step 3: Compare the formula with the monosaccharide formula
- The general formula for monosaccharides is \( C_n(H_2O)_n \).
- For glucose, we can see that it fits this formula:
- \( n = 6 \) gives us \( C_6(H_2O)_6 \) or \( C_6H_{12}O_6 \).

### Step 4: Conclusion
- Since glucose has the formula \( C_6H_{12}O_6 \) and fits the definition of a monosaccharide, we conclude that glucose is indeed a monosaccharide.

### Final Answer
Glucose is a monosaccharide.

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