To explain: The membrane proteins can diffuse freely between the two nuclear membranes, yet each of these nuclear membranes has a different protein composition.
Introduction: The nuclear envelope that is present in the cell consists of outer and inner nuclear membrane and these membranes consist of different proteins with different composition and structures. The inner membrane is lined with a fiber network which will give strength to the inner membrane proteins.
Explanation of Solution
The nucleolus and genetic material present in the eukaryotic cells are surrounded by a lipid bilayer membrane called the nuclear envelope. It is also known as a nuclear membrane. The inner and outer nuclear membrane forms a continuous sheet and will be joined around the nuclear pores. The outer and inner membrane consists of the membrane proteins with special functions.
The outer membrane contains of nesprin proteins which connect the cytoskeletal filaments to the nucleoskeleton. The inner membrane consists of the nucleoplasm and is surrounded by the nuclear lamina. The outer and inner membrane is connected by the nuclear pore.
There are chances for the proteins to diffuse between the inner and outer nuclear membrane around the nuclear pores but the protein composition is different in both the membranes. The proteins present in the inner membrane interact with other components present in their membranes like the chromosomes and nuclear lamina.
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Chapter 15 Solutions
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