This consists of mostly linear strands

Options

A. Starch
B. Glycogen
C. Cellulose
D. Firbrin.

Answer

To solve the question "This consists of mostly linear strands," we will analyze the given options: starch, glycogen, cellulose, and fibrin.

### Step-by-Step Solution:

1. **Understanding the Options**:
- **Starch**: Starch is a polysaccharide that exists in two forms: amylose and amylopectin. Amylose is a linear polymer of glucose, while amylopectin has a branched structure due to alpha 1,6 linkages.
- **Glycogen**: Glycogen is also a polysaccharide made up of glucose units. It has a highly branched structure due to both alpha 1,4 and alpha 1,6 linkages.
- **Cellulose**: Cellulose is a polysaccharide consisting of linear chains of glucose units connected by beta 1,4 linkages. It does not have branching, making it a linear structure.
- **Fibrin**: Fibrin is a protein that forms a mesh-like structure and has a branched arrangement.

2. **Analyzing Each Option**:
- **Starch**: Since amylopectin is branched, starch cannot be considered mostly linear.
- **Glycogen**: Glycogen is also branched, so it does not consist of mostly linear strands.
- **Cellulose**: Cellulose is composed of linear strands of glucose units linked by beta 1,4 linkages, making it the only option that is mostly linear.
- **Fibrin**: Fibrin has a branched structure, which rules it out as well.

3. **Conclusion**:
- Based on the analysis, the option that consists of mostly linear strands is **Cellulose**.

### Final Answer:
The correct answer is **C) Cellulose**.