Which organelle is responsible for modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles?

• A. The Golgi apparatus
• B. Mitochondria
• C. Lysosomes
• D. Nucleus

Answer: (A)

Organelles that prepare and dispatch cellular cargo: the Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles. It receives newly made proteins and lipids from the endoplasmic reticulum, adds finishing touches like sugar groups, and then labels them so they know where to go. After this processing, the Golgi packages the molecules into vesicles that bud off and travel to the plasma membrane to be secreted, or to lysosomes or other cellular destinations. This combination of modifying, sorting, and directing cargo is what sets the Golgi apart from organelles with other primary roles: mitochondria generate energy, the nucleus stores genetic information, and lysosomes break down waste material.