Multiple Choice
Which organelle completes many post-translational modifications of proteins and packages them into vesicles for transport to their final destinations?
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13. Intracellular Protein Transport
Golgi Processing and Transport
Multiple Choice
Which organelle is primarily responsible for modifying, sorting, and packaging proteins for secretion or delivery to other organelles within a eukaryotic cell?
A
Rough endoplasmic reticulum (RER)
B
Mitochondrion
C
Nucleus
D
Golgi apparatus
Verified step by step guidance1
Understand the roles of the organelles listed: The Rough Endoplasmic Reticulum (RER) is involved in protein synthesis and initial folding, the Mitochondrion is the powerhouse of the cell producing ATP, and the Nucleus contains genetic material and controls cell activities.
Recall that after proteins are synthesized in the RER, they need to be further processed, modified, sorted, and packaged for their final destinations either inside or outside the cell.
Identify the organelle responsible for these post-translational modifications and packaging, which is the Golgi apparatus. It receives proteins from the RER and modifies them by adding carbohydrate groups or other molecules.
Recognize that the Golgi apparatus sorts these modified proteins and packages them into vesicles for secretion outside the cell or delivery to other organelles.
Conclude that the Golgi apparatus is the primary organelle responsible for modifying, sorting, and packaging proteins for secretion or delivery within a eukaryotic cell.
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