The polysaccharide that is not made up of only one type of monosaccharide is

Options

A. glycogen
B. cellulose
C. insulin
D. all of the above

Answer

To solve the question regarding which polysaccharide is not made up of only one type of monosaccharide, we can follow these steps:

### Step 1: Understand the Question
The question asks for a polysaccharide that is composed of different types of monosaccharides, rather than just one type.

**Hint:** Recall that polysaccharides are long chains of monosaccharides and can be made from one or multiple types of monosaccharides.

### Step 2: Analyze the Options
We need to evaluate each option provided in the question to determine their composition.

1. **Glycogen:** This is a polysaccharide that serves as an energy storage form in animals. It is primarily made up of glucose units.

**Hint:** Glycogen is a storage polysaccharide, and its monomers are all the same.

2. **Cellulose:** This is a structural polysaccharide found in plant cell walls. It is made up of beta-linked D-glucose units.

**Hint:** Like glycogen, cellulose is also composed of the same type of monosaccharide.

3. **Insulin:** This is not a polysaccharide but a protein hormone. However, if we consider it in the context of polysaccharides, it can be mentioned that it is composed of different types of monosaccharides, specifically D-Glucose, D-Galactose, and D-Ribose.

**Hint:** Insulin is a protein, but if it were to be considered in a polysaccharide context, it would involve multiple types of monosaccharides.

4. **All of the above:** This option suggests that all the previous options are polysaccharides made up of different types of monosaccharides.

**Hint:** Evaluate if all previous options can be classified under the same criteria.

### Step 3: Determine the Correct Answer
After analyzing the options, we find that:

- Glycogen and cellulose are both made up of the same type of monosaccharide (glucose).
- Insulin, while not a polysaccharide, is mentioned in a context that implies it involves multiple types of monosaccharides.

Thus, the correct answer to the question is **Insulin**, as it does not fit the criteria of being a polysaccharide made up of only one type of monosaccharide.

**Final Answer:** Insulin