alleryStart learning →The nuclear envelope is built from:
AOne phospholipid bilayer
BTwo phospholipid bilayers
COne layer of pure protein
DTwo layers of pure protein
Answer & Solution
Correct answer: B. Two phospholipid bilayers
1. The nuclear envelope is the boundary of the nucleus.
2. It is not a single membrane.
3. It consists of two phospholipid bilayers, an outer membrane and an inner membrane.
4. Protein-only options are wrong because every cell membrane is built on a lipid bilayer.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 4 'Cell Structure', sections 4.1-4.6_
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