Description

what are found in the nucleus ?

Here are some links that might be useful to you:

https://www.britannica.com/science/nucleus-biology

https://www.britannica.com/science/nucleus-biology
Nucleus | Definition, Function, Structure, & Facts | Britannica
16 avr. 2024Nucleus, in biology, a specialized structure occurring in most cells (except bacteria and blue-green algae) and separated from the rest of the cell by a double layer, the nuclear membrane. The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes.
Nucleolus
nucleolus, spherical body within the nucleus of most eukaryotic cells, involved in the synthesis of ribosomal RNA (rRNA) and the formation of ribosomes.Nucleoli appear shortly after mitosis and form around specific repeating chromosome regions, known as nucleolar organizing regions, within the nucleus. A single nucleus can house one to several nucleoli, depending on the organism and cell type.
6 Cell Organelles
The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information. Within the nucleus is a smaller structure called the nucleolus, which houses the RNA (ribonucleic acid). … The powerhouses of the cell, mitochondria are oval-shaped organelles found in most eukaryotic cells. As the …
Endoplasmic Reticulum
The ER can be classified in two functionally distinct forms: smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER). The morphological distinction between the two is the presence of protein-synthesizing particles, called ribosomes, attached to the outer surface of the RER.The functions of the SER, a meshwork of fine tubular membrane vesicles, vary considerably from cell to …
Messenger RNA
In prokaryotes (organisms that lack a distinct nucleus), mRNAs contain an exact transcribed copy of the original DNA sequence with a terminal 5′-triphosphate group and a 3′-hydroxyl residue. In eukaryotes (organisms that possess a clearly defined nucleus) the mRNA molecules are more elaborate. The 5′-triphosphate residue is further esterified, forming a structure called a cap.

https://en.wikipedia.org/wiki/Cell_nucleus

https://en.wikipedia.org/wiki/Cell_nucleus
Cell nucleus – Wikipedia
The cell nucleus (from Latin nucleus or nuculeus ‘kernel, seed’; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells.Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others including osteoclasts have many. main structures making up the nuclear envelope, a double membrane that …

https://www.khanacademy.org / science / biology / structure-of-a-cell / prokaryotic-and-eukaryotic-cells / a / nucleus-and-ribosomes

https://www.khanacademy.org / science / biology / structure-of-a-cell / prokaryotic-and-eukaryotic-cells / a / nucleus-and-ribosomes
Nucleus and ribosomes (article) | Khan Academy
The nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, … Because protein synthesis is an essential function of all cells, ribosomes are found in practically every cell type of multicellular organisms, as well as in prokaryotes such as bacteria. However, eukaryotic cells that …

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/03:_The_Cellular_Basis_of_Life/3.03:_The_Nucleus

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/03:_The_Cellular_Basis_of_Life/3.03:_The_Nucleus
3.3: The Nucleus – Biology LibreTexts
15 mai 2022The nucleus contains the chromosomes of the cell. Each chromosome consists of a single molecule of DNA complexed with an equal mass of proteins. Collectively, the DNA of the nucleus with its associated proteins is called chromatin. Most of the protein consists of multiple copies of 5 kinds of histones.

https://www.thoughtco.com/the-cell-nucleus-373362

https://www.thoughtco.com/the-cell-nucleus-373362
The Nucleus – Definition, Structure, and Function – ThoughtCo
The nucleus regulates the synthesis of proteins in the cytoplasm through the use of messenger RNA (mRNA). Messenger RNA is a transcribed DNA segment that serves as a template for protein production. It is produced in the nucleus and travels to the cytoplasm through the nuclear pores of the nuclear envelope, which you’ll read about below.

https://www.sciencefacts.net/cell-nucleus.html

https://www.sciencefacts.net/cell-nucleus.html
Cell Nucleus: Definition, Structure, & Function, with Diagram
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.

https://www.kenhub.com/en/library/anatomy/cell-nucleus

https://www.kenhub.com/en/library/anatomy/cell-nucleus
Cell nucleus: Histology, structure and functions | Kenhub
19 sept. 2023The cell nucleus is the most noticeable organelle within the eukaryotic cell, and perhaps the most important and defining feature of the eukaryotic cells.Most of the genetic material (DNA) is contained in the nucleus, while a small amount of it is found in mitochondria. The majority of human cells have a single , although there are several cell types that have multiple nuclei (e.g …

https://biologydictionary.net/cell-nucleus

https://biologydictionary.net/cell-nucleus
Cell Nucleus (Plant & Animal) – Definition and Function | Biology
Cell Nucleus Definition. The cell nucleus is a large organelle in eukaryotic organisms which protects the majority of the DNA within each cell. The nucleus also produces the necessary precursors for protein synthesis. The DNA housed within the cell nucleus contains the information necessary for the creation of the majority of the proteins …

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Principles_of_Biology/01:_Chapter_1/05:_Cell_Structure_and_Function/5.08:_The_Nucleus

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Principles_of_Biology/01:_Chapter_1/05:_Cell_Structure_and_Function/5.08:_The_Nucleus
5.8: The Nucleus – Biology LibreTexts
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 ). Figure 5.8.1 5.8. 1: The outermost boundary of the nucleus is the nuclear envelope.

https://www.khanacademy.org/test-prep/mcat/cells/eukaryotic-cells/v/the-nucleus

https://www.khanacademy.org/test-prep/mcat/cells/eukaryotic-cells/v/the-nucleus
The nucleus (video) | Eukaryotic cells | Khan Academy
The nucleus. Let’s learn about the structure and function of the eukaryotic cell’s nucleus. Discover the role of the outer and inner membranes, the nucleoplasm, and the nuclear pore in isolating the nucleus and facilitating transport. Explore the nucleolus, the site of ribosome assembly, and its relationship with the endoplasmic reticulum.
lesoutrali bot