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Why are black holes called "black"?
Endoplasmic Reticulum
An organelle in eukaryotic cells that plays a key role in protein and lipid synthesis and transport.
Nuclear Envelope
Double membrane structure surrounding and enclosing the nucleus.
Chromosomes
Structures made of DNA and protein that contain the genes and are found in the nucleus of eukaryotic cells.
Nuclear Pores
Porelike openings in the nuclear envelope where the inner and outer membranes fuse.
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