Question

A force of ten newton is applied on an object of mass 1 kg for two seconds which was intially at rest. Work done on that object will be 20 joules. So, explain what is the nuclear membrane or envelope of the nucleus ?​

Answer 1

Answer:

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Nuclear membrane or envelope : It is the outer cover of the nucleus, which is selectively permeable. It separates the nucleoplasm of nucleus with cytoplasm. It is double layered and has pores called nucleus pores. 

Through which materials are exchanged between the nucleoplasm and cytoplasm of the cell.

Answer 2

The Nuclear Envelope and Traffic between the Nucleus and Cytoplasm

The nuclear envelope separates the contents of the nucleus from the cytoplasm and provides the structural framework of the nucleus. The nuclear membranes, acting as barriers that prevent the free passage of molecules between the nucleus and the cytoplasm, maintain the nucleus as a distinct biochemical compartment. The sole channels through the nuclear envelope are provided by the nuclear pore complexes, which allow the regulated exchange of molecules between the nucleus and cytoplasm. The selective traffic of proteins and RNAs through the nuclear pore complexes not only establishes the internal composition of the nucleus, but also plays a critical role in regulating eukaryotic gene expression.