GATE 2021 BT – Question 29
Which organelles are surrounded by a single phospholipid membrane?
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Correct answer: (A) Golgi apparatus; (B) Lysosome
Explanation
Check the membranes around each organelle.
- **Golgi apparatus:** a stack of flattened sacs, each bounded by a **single** membrane. ✓
- **Lysosome:** a vesicle with a **single** membrane. ✓
- **Mitochondria:** surrounded by two membranes (outer and inner). ✗
- **Nucleus:** surrounded by a double membrane, the nuclear envelope. ✗
Answer **Golgi apparatus and lysosome** (A and B).