The correct answer is: D.To protect the DNA and regulate transport in and out of the nucleus.
The nuclear envelope is a double membrane structure that surrounds the nucleus. Its primary functions are:
1.Protection: It serves as a barrier, protecting the DNA inside the nucleus from damage.
2.Regulation of transport: The nuclear envelope contains nuclear pores that control the movement of molecules between the nucleus and the cytoplasm. For example, mRNA and ribosomal subunits are exported from the nucleus, while proteins and other necessary molecules are imported.
Here’s why the other options are incorrect:
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