Glycogen is related to

Options

A. Glucose
B. Starch
C. Ribose sugar
D. Lactose.

Answer

**Step-by-Step Solution:**

1. **Understanding Glycogen:**
- Glycogen is a polysaccharide, which means it is made up of many monosaccharide units. Specifically, glycogen is composed of glucose units linked together primarily by alpha-1,4 and alpha-1,6 glycosidic bonds.
- It serves as a storage form of carbohydrates in animals, primarily stored in the liver and muscles.

2. **Analyzing the Options:**
- **Option A: Glucose**
- Glucose is a monosaccharide and the building block of glycogen. However, since glycogen is a polysaccharide, this option does not directly relate to glycogen in terms of structure or function.
- **Option B: Starch**
- Starch is also a polysaccharide made up of glucose units. It serves as a storage form of carbohydrates in plants. Since both glycogen and starch are polysaccharides and serve as storage forms of carbohydrates, this option is a strong candidate.
- **Option C: Ribose**
- Ribose is a five-carbon monosaccharide and is part of nucleic acids. It does not relate to glycogen, which is a polysaccharide made of glucose.
- **Option D: Sugar**
- The term "sugar" is quite broad and can refer to both monosaccharides and disaccharides. It does not specifically relate to glycogen as a polysaccharide.
- **Option E: Lactose**
- Lactose is a disaccharide composed of glucose and galactose. It does not relate to glycogen, which is a polysaccharide.

3. **Conclusion:**
- After analyzing all the options, the best answer is **Option B: Starch**. Both glycogen and starch are polysaccharides and serve as storage forms of carbohydrates, albeit in different organisms (animals for glycogen and plants for starch).

**Final Answer: Glycogen is related to Starch.**

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