What do lysosomes do?

What do lysosomes do?

• A. Produce proteins
• B. Break down waste and toxins
• C. Store energy
• D. Contain DNA

Answer: (B)

Lysosomes act as the cell’s digestive and recycling centers. They contain enzymes that break down waste materials, damaged or worn-out cellular components, and invading substances like bacteria. This digestion happens in an acidic internal environment, and lysosomes often fuse with vesicles brought into the cell by endocytosis or with autophagosomes to digest their contents. By breaking these things down, lysosomes recycle building blocks the cell can reuse for other processes. Think of what lysosomes do in contrast: making proteins is the job of ribosomes (often on the rough ER), storing energy is handled by mitochondria, and DNA is housed in the nucleus (with mitochondria having their own DNA). Lysosomes don’t perform those roles.

Lysosomes act as the cell’s digestive and recycling centers. They contain enzymes that break down waste materials, damaged or worn-out cellular components, and invading substances like bacteria. This digestion happens in an acidic internal environment, and lysosomes often fuse with vesicles brought into the cell by endocytosis or with autophagosomes to digest their contents. By breaking these things down, lysosomes recycle building blocks the cell can reuse for other processes.

Think of what lysosomes do in contrast: making proteins is the job of ribosomes (often on the rough ER), storing energy is handled by mitochondria, and DNA is housed in the nucleus (with mitochondria having their own DNA). Lysosomes don’t perform those roles.