Classify the following into monosaccharides and disaccharides: Ribose, `2-`deoxyribose, maltose,galactose, fructose,and lactose.

Explanation

To classify the given compounds into monosaccharides and disaccharides, we can follow these steps:

### Step 1: Understand the definitions
- **Monosaccharides** are the simplest form of carbohydrates, consisting of single sugar units. Examples include glucose, fructose, and ribose.
- **Disaccharides** are carbohydrates formed from two monosaccharide units linked together. Examples include sucrose, lactose, and maltose.

### Step 2: Identify each compound
- **Ribose**: A five-carbon sugar (pentose) that is a monosaccharide.
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