Multiple choice

Nuclear membrane disappears at late prophase and reappears at the end of telophase. From where do these nuclear membranes arise?

  1. From cytoplasm of the cell

  2. From nucleus of the cell

  3. From ER and old nuclear membrane pieces

  4. From NOR
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

During mitosis, the nuclear envelope merges with the endoplasmic reticulum (ER), and nuclear pore complexes are disassembled. In a current model for reassembly after mitosis, the nuclear envelope forms by a reshaping of ER tubules.

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