Multiple Choice
Which organelle is primarily responsible for modifying, sorting, and packaging proteins for secretion or delivery to other organelles within a eukaryotic cell?
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13. Intracellular Protein Transport
Golgi Processing and Transport
Multiple Choice
In eukaryotic cells, which organelle modifies, sorts, and packages newly synthesized proteins into vesicles for transport to their destinations?
A
Mitochondrion
B
Golgi apparatus
C
Rough endoplasmic reticulum
D
Nucleolus
Verified step by step guidance1
Identify the function described in the question: modifying, sorting, and packaging newly synthesized proteins for transport.
Recall that proteins are initially synthesized by ribosomes, often on the rough endoplasmic reticulum (ER), but the rough ER mainly assists in protein synthesis and initial folding.
Understand that after synthesis, proteins are transported to another organelle responsible for further modification, sorting, and packaging into vesicles.
Recognize that the Golgi apparatus is the organelle that receives proteins from the rough ER, modifies them (e.g., glycosylation), sorts them based on their destination, and packages them into vesicles.
Conclude that among the options given, the Golgi apparatus is the correct organelle performing these functions.
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