Intracellular digestion occurs in human body for

Options

A. Lipids
B. Proteins
C. Sucrose
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Intracellular Digestion**:
- Intracellular digestion refers to the process where digestion occurs inside the cells of the body. This is different from extracellular digestion, which happens outside the cells.

2. **Identifying the Substances Involved**:
- The question asks about the substances for which intracellular digestion occurs. The options given are lipids, proteins, sucrose, or all of the above.

3. **Analyzing Each Option**:
- **Lipids**: Intracellular digestion does occur for lipids. Cells can break down lipids into fatty acids and glycerol.
- **Proteins**: Similarly, proteins are also digested intracellularly. Cells utilize enzymes to break down proteins into amino acids.
- **Sucrose**: Sucrose, a carbohydrate, is also subject to intracellular digestion. It can be broken down into glucose and fructose inside the cells.

4. **Conclusion**:
- Since intracellular digestion occurs for all three substances (lipids, proteins, and sucrose), the correct answer is **D, all of the above**.

**Final Answer**: D, all of the above.

---