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Definition of NucleusDefinition of Nucleus Cell Nucleus is a membrane-

enclosed cell organelle that can be found in all eukaryotic cells.

Definition of NucleusDefinition of Nucleus Only eukaryotic cells have

nucleus. Prokaryotic cells do not contain a cell nucleus of

membrane bound organelles.

Example: Bacteria

Definition of NucleusDefinition of Nucleus Cell Nucleus is the main organelle which controls the whole cell. I t also helps cell to reproduce.

Job of NucleusJob of Nucleus

Cell Nucleus is the command center of the cells.

So, it controls the activit ies of the cell, no matter what it is.

Job of NucleusJob of Nucleus Cell Nucleus have most of the DNA and genetic information. In other words, i t is the most important part of the eukaryotic cells. Nucleus

DNA

Structure of NucleusStructure of Nucleus

Structure of NucleusStructure of Nucleus-Outer Membrane--Outer Membrane-

Outer Membrane is one of the two membranes that is facing the cytoplasm.

Structure of NucleusStructure of Nucleus-- Inner MembraneInner Membrane --

Inner Membrane is also one of the two membranes which separates the nuclear matrix from the intermembrane space.

Structure of NucleusStructure of Nucleus-Nucleoplasm--Nucleoplasm-

Nucleoplasm is one of the types of protoplasm. It is covered by the nuclear

membrane. This part is a stinky liquid that surrounds the chromosomes and nucleoli.

Structure of NucleusStructure of Nucleus-- NucleolusNucleolus --

Nucleolus is usually in the center of the Nucleus. It is composed of protein and nucleic acids. *Many people think Nucleus and Nucleolus are the same thing, but they aren’t.

Structure of NucleusStructure of Nucleus-Chromatin--Chromatin-

Chromatin is composed of long thin stands of DNA. And it contains instructions that control cell metabolism and heredity.

Structure of NucleusStructure of Nucleus-Nuclear Envelope--Nuclear Envelope-

Nuclear Envelope is the double membrane that is surrounding the nucleus.

Structure of NucleusStructure of Nucleus-Nuclear Pore--Nuclear Pore-

Nuclear Pores are the huge complexes of protein that cross the nuclear envelope.

Armanova AlinaArmanova AlinaKypshakbay AruzhanKypshakbay Aruzhan

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