Function of the Nucleoplasm

The nucleus of most cells contains a substance that suspends structures inside the nuclear membrane. Just like the cytoplasm found inside a cell, the nucleus contains nucleoplasm, also known as karyoplasm.

The nucleoplasm is a type of protoplasm that is made up mostly of water, a mixture of various molecules, and dissolved ions. It is completely enclosed within the nuclear membrane or nuclear envelope. It is a highly gelatinous, sticky liquid that supports the chromosomes and nucleoli. A soluble, fluid component of the nucleoplasm is called the nuclear hyaloplasm.

The main function of the nucleoplasm is to serve as a suspension substance for the organelles inside the nucleus. It also helps maintain the shape and structure of the nucleus, and plays an important role in the transportation of materials that are vital to cell metabolism and function.

Many substances such as nucleotides and enzymes are dissolved in the nucleoplasm.


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