Food particle : Secondary lysosome
:: Part of the cell : ________

Explanation

To solve the analogy presented in the question "Food particle : Secondary lysosome :: Part of the cell : ________", we need to analyze the relationship between the two pairs.

### Step-by-Step Solution:

1. **Understand the First Pair**:
- The first part of the analogy is "Food particle : Secondary lysosome".
- When a cell engulfs food particles through a process called phagocytosis, these food particles are enclosed in a vesicle known as a phagosome.
- The phagosome then fuses with a primary lysosome, which contains digestive enzymes, to form a secondary lysosome. This is where digestion of the food particles occurs.
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