Multiple Choice
Which nuclear structure is found inside the nucleus and is responsible for producing ribosomal subunits?
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5. DNA to RNA to Protein
mRNA Export and Nuclear Structures
Multiple Choice
In the context of mRNA export and nuclear structures, what is the membrane surrounding the nucleus called?
A
Nuclear envelope
B
Plasma membrane
C
Nuclear lamina
D
Endoplasmic reticulum lumen
Verified step by step guidance1
Understand that the nucleus is a membrane-bound organelle in eukaryotic cells that contains the genetic material.
Recall that the nucleus is surrounded by a double membrane structure that separates the contents of the nucleus from the cytoplasm.
Identify that this double membrane is called the nuclear envelope, which controls the passage of molecules such as mRNA between the nucleus and cytoplasm.
Differentiate the nuclear envelope from other options: the plasma membrane surrounds the entire cell, the nuclear lamina is a protein network inside the nucleus, and the endoplasmic reticulum lumen is the internal space of the ER.
Conclude that the membrane surrounding the nucleus, involved in mRNA export, is the nuclear envelope.
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