The nuclear membrane

1. Nuclear Membrane

2. - also known as the nuclear envelope -is the double lipid bilayer membrane which surrounds the genetic material and nucleolus in eukaryotic cells -consists of two lipid bilayers—the inner nuclear membrane, and the outer nuclear membrane. Nuclear Membrane

3. The space between the membranes is called the perinuclear space, a region contiguous with the lumen (inside) of the endoplasmic reticulum. Outer Nuclear membrane The outer nuclear membrane is also contiguous with the endoplasmic reticulum. While it is physically linked, the outer nuclear membrane contains various proteins found in far higher concentrations than the endoplasmic reticulum. Inner Nuclear membrane The inner nuclear membrane encloses the nucleoplasm. It is connected to the outer membrane by nuclear pores which penetrate the membranes. While the two membranes and the endoplasmic reticulum are linked, proteins embedded in the membranes tend to stay put rather than dispersing across the continuum.

4. The Functions of Nuclear Membrane Compartmentalizing. The nuclear membrane is vital in separating the nuclear material from the cellular material. Compartmentalization is vital in eukaryote cells to prevent the free mixture of cellular material with the nuclear material. Shape and stability of the nucleus. With the help of the lamina inside the nucleus, the double membrane helps keep the nucleus from collapsing and interfering with the functions of the nucleus.

5. Regulation of substances in and out of the nucleus. Proper function of the nucleus requires the regulation of what proteins and enzymes are allowed in and out of the nucleus. The control of these passages is carried out by the thousands of nuclear pores. Each pore has its own regulatory proteins that only allow specific substances to pass in or out of the nucleus. Communication. The nuclear membrane and nuclear pores regulate the chemical communication between the nucleus and the rest of the cell. This communication is vital to the overall welfare and function of the cell. The Functions of Nuclear Membrane

6. Questions: 1. What are the two lipid bilayers? 2. What is the peninuclear space? 3.-4. Give 2 functions of the nuclear membrane. 5. Other name for nuclear membrane.

7. Answers : 1. Inner Nuclear Membrane and Outer Nuclear Membrane 2. Peninuclear space is the space between the membranes or a region contiguous with the lumen of the endoplasmic reticulum. 3.-4. Compartmentalizing, Shape and stability of the nucleus, Regulation of substances in and out of the nucleus or Communication 5. Nuclear Envelope

8. By: Alyza Joyce A. Rotas VIII-Mendel THE END Thank you for listening!