The double-membrane structure forming the outermost part of the nucleus is the nuclear:
AEmulsion
BExtension
CEnclosure
DEnvelope
Answer & Solution
Correct answer: D. Envelope
1. A single membrane would be like the plasma membrane.
2. The nucleus is wrapped in two bilayers instead.
3. That wrapping is the nuclear envelope.
_Source: OpenStax Concepts of Biology, Chapter 3, Cell Structure and Function._
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