Cells & Movement in & out - Structure of nucleus Flashcards
(5 cards)
1
Q
Nuclear envelope
A
- double membrane
- outer membrane continuous w/ endoplasmic reticulum
- often has ribosomes on surface
- controlls entry & exit of material
2
Q
Nuclear pores
A
- allows passage of large molecules out of nucleus
eg. messenger RNA
3
Q
Nucleoplasm
A
granular, jelly-like material makes up bulk of nucleus
4
Q
Chromatin
A
-is DNA found in nucleoplasm
5
Q
Nucleolus
A
- small spherical body within nucleoplasm
- manufactures ribosomal RNA and assembles ribosomes
