Search results
- DictionaryNu·cle·us/ˈno͞oklēəs/
noun
- 1. the central and most important part of an object, movement, or group, forming the basis for its activity and growth: "the nucleus of a film-producing industry"
- 2. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
Feb 4, 2021 · The nucleus is a double membrane-bound organelle located centrally only in a eukaryotic cell, enclosing the DNA, the genetic material. It is the most important and defining feature of all higher organisms, including plant and animal cells, whose main function is to control and coordinate the functioning of the entire cell.
Nucleolus. References. Typically, the nucleus is the most prominent organelle in a cell. The nucleus (plural = nuclei) houses the cell’s DNA in the form of chromatin and directs the synthesis of ribosomes and proteins. Let us look at it in more detail ( Figure 5.8.1 5.8. 1 ).
the central part of an atom or cell. nucleus noun [C] (IMPORTANT PART) the central or most important part of a group or idea: Senior coaches handpicked the nucleus of the team. (Definition of nucleus from the Cambridge Learner's Dictionary © Cambridge University Press) Translations of nucleus. in Chinese (Traditional) 原子核, 細胞核… See more.
Sep 19, 2023 · Nucleolus abnormalities. Sources. + Show all. Shape and appearance. The nucleus is normally around 5-10 μm in diameter in many multicellular organisms, and the largest organelle in the cell. The smallest nuclei are approximately 1 μm in diameter and are found in yeast cells. Cell nucleus (histological slide)
the central part of something around which other parts are located or collected. These paintings will form the nucleus of a new collection. Definition of nucleus noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Feb 28, 2021 · The nucleolus is a condensed region of chromatin where ribosome synthesis occurs. The boundary of the nucleus is called the nuclear envelope. It consists of two phospholipid bilayers: an outer membrane and an inner membrane. The nuclear membrane is continuous with the endoplasmic reticulum.
A nucleus is defined as a double-membraned eukaryotic cell organelle that contains the genetic material. A nucleus diagram highlighting the various components. Moreover, only eukaryotes have the nucleus, prokaryotes have the nucleoid.
