Multiple Choice
Which of the following organelles is responsible for packaging and modifying proteins within a eukaryotic cell?
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5. Cell Components
Introduction to Eukaryotic Organelles
Multiple Choice
What is the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?
A
The nuclear pores are connections between the nuclear membrane and the endoplasmic reticulum that permit ribosomes to assemble on the surface of the ER.
B
The nucleolus contains messenger RNA (mRNA), which crosses the nuclear envelope through the nuclear pores.
C
Membrane of the endoplasmic reticulum is produced in the nucleolus and leaves the nucleus through the nuclear pores.
D
None of the listed responses is correct.
E
Subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores.
Verified step by step guidance1
Understand the role of the nucleolus: The nucleolus is a region within the nucleus where ribosomal RNA (rRNA) is synthesized and combined with proteins to form ribosomal subunits.
Identify the function of nuclear pores: Nuclear pores are large protein complexes that span the nuclear envelope, allowing the transport of molecules between the nucleus and the cytoplasm.
Recognize the role of the nuclear membrane: The nuclear membrane, also known as the nuclear envelope, is a double membrane structure that encloses the nucleus, providing a barrier between the nucleoplasm and the cytoplasm.
Connect the nucleolus and nuclear pores: Ribosomal subunits assembled in the nucleolus are transported through the nuclear pores to the cytoplasm, where they participate in protein synthesis.
Clarify the correct functional connection: The correct connection is that subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores.
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