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Multiple Choice
Which organelle completes many post-translational modifications of proteins and packages them into vesicles for transport to their final destinations?
A
Nucleolus
B
Golgi apparatus
C
Mitochondrion
D
Rough endoplasmic reticulum
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1
Identify the organelles involved in protein synthesis and processing: the nucleolus, mitochondrion, rough endoplasmic reticulum (ER), and Golgi apparatus.
Recall that the nucleolus is primarily responsible for ribosomal RNA synthesis and ribosome assembly, not protein modification or packaging.
Understand that the rough ER is the site where proteins are initially synthesized and folded, but it does not complete many post-translational modifications or package proteins into vesicles.
Recognize that the mitochondrion is involved in energy production and has its own DNA, but it is not involved in protein modification or packaging for transport.
Conclude that the Golgi apparatus is the organelle that completes many post-translational modifications of proteins (such as glycosylation) and packages them into vesicles for transport to their final destinations.