Most abundant organic compound on earth is

Options

A. Protein
B. Cellulose
C. Lipids
D. Steroids

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the most abundant organic compound on Earth. The options provided are proteins, cellulose, lipids, and steroids.

2. **Understanding Organic Compounds**: Organic compounds are primarily made of carbon and are essential for life. They include carbohydrates, proteins, lipids, and nucleic acids.

3. **Analyzing the Options**:
- **Proteins**: While proteins are vital for many biological functions, they are not the most abundant organic compound.
- **Lipids**: Lipids are important for energy storage and cell membranes but are not as abundant as cellulose.
- **Steroids**: Steroids are a type of lipid and are not abundant compared to cellulose.

4. **Focus on Cellulose**: Cellulose is a carbohydrate made up of glucose monomer units. It is a structural component of the cell wall in plants.

5. **Presence of Cellulose**: Cellulose is found in the cell walls of all plants, making it widely distributed and abundant in nature.

6. **Digestibility**: Humans cannot digest cellulose because we lack the necessary enzymes. However, some animals, like ruminants, can digest it due to specialized gut bacteria.

7. **Conclusion**: Based on the analysis, the most abundant organic compound on Earth is cellulose.

**Final Answer**: The most abundant organic compound on Earth is cellulose.

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