write 5 point about nucleus
Answers
Nucleus, 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. This membrane seems to be continuous with the endoplasmic reticulum (a membranous network) of the cell and has pores, which probably permit the entrance of large molecules. The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.
Because the nucleus houses an organism’s genetic code, which determines the amino acid sequence of proteins critical for day-to-day function, it primarily serves as the information centre of the cell. Information in DNA is transcribed, or copied, into a range of messenger ribonucleic acid (mRNA) molecules, each of which encodes the information for one protein (in some instances more than one protein, such as in bacteria). The mRNA molecules are then transported through the nuclear envelope into the cytoplasm, where they are translated, serving as templates for the synthesis of specific proteins. For more information on these processes, see transcription; translation.
A "double-membraned organelle" found in eukaryotic cells known as just a nucleus that houses the genetic information.
- The crucial organelle that controls practically all biological processes is indeed the nucleus.
- The majority of all time, the existence or lack of a nucleoid determines what sort of cell it is.
- Most eukaryotes have a nucleus, which is what distinguishes eukaryotic cells from other types of cells.
- However, although coming from eukaryotic creatures, some cells, like RBCs, do not have a nucleus.
- It regulates the cell's development and reproduction and holds the genetic information.
- The genetic makeup of a cell is contained in the nucleus, which has been discussed in detail as a membrane-bound structure.
- In addition to serving as a DNA storage space, it also serves as the location of various significant cellular functions.
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