Nucleus
Table of Contents
Definition
- It is the control center of the cell.
- Double membrane.
- contains chromosomes (house of the DNA).
Chromatin
- Package DNA
- Protect DNA structure and sequence.
Functions
- to package DNA into a more compact, denser shape.
- to reinforce the DNA macromolecule to allow mitosis
- to prevent DNA damage
- to control gene expression and DNA replication.
Nuclear Envelope
- Nuclear Membrane
- Double Membrane
- Gives additional protection to the nucleus.
- It seperates nucleus from the rest of the cell.
- It is composed of nuclear pores.
Nucleolus
- Site within nucleus of rRNA synthesis.
- Its main function is to be synthesis and assembly of ribosomes.
- contained within the nucleus which is a dense structure that composed of RNA and proteins.