Nucleoplasm
Nucleoplasm
Nucleoplasm (pronounced: noo-klee-o-plaz-uhm) is a type of substance found within the nucleus of a eukaryotic cell. It is often compared to the cytoplasm of a cell, but is contained within the nucleus, hence the name 'nucleoplasm'.
Etymology
The term 'nucleoplasm' is derived from the Latin 'nucleus' meaning 'kernel' and the Greek 'plasma' meaning 'something formed or molded'.
Definition
Nucleoplasm, also known as karyoplasm or nucleus sap, is the gel-like substance within the nucleus of a cell. It is composed of water, a variety of enzymes, dissolved salts, and organic molecules. The primary function of the nucleoplasm is to act as a suspension medium for the organelles within the nucleus.
Components
The nucleoplasm contains a variety of substances that contribute to the function of the nucleus. These include:
- Nucleolus: This is the most visible component in the nucleoplasm. It is involved in the production of ribosomes.
- Chromatin: This is a complex of DNA and protein that condenses to form chromosomes during eukaryotic cell division.
- Nuclear Matrix: This is a network of fibers that maintains the shape of the nucleus and organizes the chromatin.
Related Terms
- Nucleus: The central and most important part of an object, movement, or group, forming the basis for its activity and growth.
- Cytoplasm: The material or protoplasm within a living cell, excluding the nucleus.
- Eukaryotic Cell: A type of cell with a nucleus enclosed by a membrane as well as membrane-bound organelles.
External links
- Medical encyclopedia article on Nucleoplasm
- Wikipedia's article - Nucleoplasm
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