Which one will not yield glucose

Options

A. Cellulose
B. Maltose
C. Glycogen
D. Hemicellulose.

Answer

To determine which of the given options will not yield glucose upon hydrolysis, we will analyze each option step by step.

### Step 1: Analyze Cellulose
- **Definition**: Cellulose is a structural polysaccharide found in the cell walls of plants.
- **Composition**: It is made up of glucose units linked by β1,4 glycosidic bonds.
- **Hydrolysis**: When cellulose undergoes hydrolysis, it breaks down into glucose molecules.
- **Conclusion**: Cellulose will yield glucose.

### Step 2: Analyze Maltose
- **Definition**: Maltose is a disaccharide composed of two glucose units.
- **Composition**: The glucose units in maltose are linked by an α1,4 glycosidic bond.
- **Hydrolysis**: Upon hydrolysis, maltose produces two molecules of glucose.
- **Conclusion**: Maltose will yield glucose.

### Step 3: Analyze Glycogen
- **Definition**: Glycogen is a storage polysaccharide found in animals.
- **Composition**: It consists of glucose units linked by α1,4 and α1,6 glycosidic bonds.
- **Hydrolysis**: When glycogen is hydrolyzed, it releases glucose molecules.
- **Conclusion**: Glycogen will yield glucose.

### Step 4: Analyze Hemicellulose
- **Definition**: Hemicellulose is a branched heteropolymer found in plant cell walls.
- **Composition**: It is made up of various monosaccharides, including xylose, mannose, galactose, and arabinose.
- **Hydrolysis**: Upon hydrolysis, hemicellulose does not produce glucose; instead, it yields different types of monosaccharides.
- **Conclusion**: Hemicellulose will not yield glucose.

### Final Answer
Based on the analysis, the option that will not yield glucose upon hydrolysis is **hemicellulose** (option 4).

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