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Nuclear envelope
structure that divides the nucleus from its cytoplasm
The inner surface of the nuclear envelope is lined by the
nuclear lamina
Nuclear pores contain the ____ that appears to fill the pore like a stopper
nuclear pore complex (NPC)
Proteins syntehsized in the cytoplasm are targeted for the nucleus by the ______________
nuclear localization signal (NLS)
Chromosomes consist of _______ fibers, composed of DNA and associated proteins
chromatin
The protein component of chromosomes include _____________, a group of highly conserved proteins
histones
DNA and histones are organized into repeating subunits called
nucleosomes
Euchromatin
Returns to a dispersed state after mitosis
Heterochromatin
Condensed during interphase
Constitutive Heterochromatin
remains condensed all the time
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