Organelle

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In cell biology, they are called organelles (or also organelles, organelles, organoids) to the different structures contained in the cytoplasm of cells, mainly eukaryotes, which have a certain shape.
The prokaryotic cell lacks most of the organelles.
The name organelles comes from the analogy between the function of these structures in cells, and the function of organs in the body.

Not all eukaryotic cells contain all the organelles at the same time, they appear in certain cells according to their functions.

Structure

Cytoplasmic current (organised movement of orgoulos) in onion bulb epidermal cells

The generic name of «organelles» (from the Latin organŭlum, diminutive of orgănum) or small organs, comes from the proposal of a biological analogy between the function of the organs in the body and the function of these microscopic structures within cells.
Each organelle has a structural unit and fulfills one or more specific functions.
Among the most important cell organelles are the nuclei, which store genetic information, and the mitochondria, which produce energy.

Main eucaritic orgies
Orgánulo Function Structure Agencies Notes
CloroplastPhotosynthesisIt has a double membranePlants, protistsIt has genetic material (DNA)
Endoplasmic ReticulousSynthesis and packaging of proteins and certain lipids (package in vesicles)Can be associated with ribosomes in your membraneEucariotThere are two types: Rugoso and Liso
Golgi's appartmentTransport and packaging of proteins, receives endoplasmic reticulous vesicles, glucolipid form, glucoproteinsFlattened sacs surrounded by cytoplasmic membraneMost eukaryotesOn the plants are known as dictiosomas
MitocondriaCell breathingDouble membrane compartment, internal and externalMost eukaryotesIt has genetic material (DNA)
VacuolasStorage, transport and homeostasisVesicular membrane shieldsPlants and fungi
NucleusDNA maintenance and genetic expressionSurrounded by double membrane, or nuclear membraneAll eukaryotesContains most of the DNA
Cellular structure of a procariot bacteria
Structure of a typical plant cell: 1. Nucleus, 2. Nucléolo, 3. Nuclear wrap, 4. Rugged Endoplasmic Reticle, 5. Leucoplasto, 6. Cytoplasm, 7. Golgi's apparel, 8. Cellular Pared, 9. Peroxisoma, 10. Plasmatic membrane, 11. Mitochondria, 12. Central vaccine, 13. Cloroplast, 14. Plasmodesmos, 15. Simple endoplasmic reticulous, 16. Cytoeskeleton, 17. Movie, 18. Ribosomas.
Other eukaryotic orgánulos and cellular components
Orgánulo/component Function Structure Agencies
AcrosomaHelps the sperm to merge with the eggSimple membrane compartmentMany animals
AutophagosomaA vesicle that stores cytoplasmic and oreganol material for degradationDouble membrane compartmentAll eukaryotic cells
CentresomaThey intervene in cell division helping the chromosomal movementCylindrical structures formed by tubes and surrounded by dense protein materialAnimals
CilioMovementProtein microtubesAnimals, protists, some plants
ExosomaDegradation of nucleic acidsProtenic ComplexEucariots and archobacteria
GlioxisomaTransformation of lipids into sugarSimple membrane compartmentPlants
HydrogenomaEnergy and hydrogen productionDouble membrane compartmentSome unicellular eukaryotes
Inflamasoma Falls of inflammation Protenic Complex Eucariot
LisosomaBreaking of large moleculesSimple membrane compartmentMost of the eucariot
Magnetosoma Magnetic orientation Magnetic crystals Some procariot
MelanosomaStorage of pigmentsSimple membrane compartmentAnimals
MythomaSimilar to mitochondria but do not contain genesDouble membrane compartmentSome unicellular eukaryotes
MiofibrillaMuscle contractingLinked filamentsAnimals
ParentosomaNo characterNo characterHong
PeroxisomasProtein oxidation / cell detoxificationSimple membrane compartmentAll eukaryotes
ProteasomeProtein degradation (previously marked with ubiquitin)Protenic ComplexAll eukaryotics and archeobacteria
RibosomesAmount of proteins from information transmitted by RNARounded structures formed by two subunitsAll living beings
DressStore, transport or digest cell products and wasteSimple membrane compartmentAll eukaryotes
Comparison of structures in animal and plant cells
Typical animal cell Typical vegetable cell
Basic structures
  • Plasma membrane
  • Cytoplasma
  • Citoeskeleton
  • Plasma membrane
  • Cytoplasma
  • Citoeskeleton
Orgánulos
  • Nucleus (with nucleus)
  • Rugged Endoplasmic Reticle
  • Liso endoplasmic
  • Ribosomes
  • Golgi's appartment
  • Mitocondria
  • Movies
  • Lisosomes
  • Vacuolas
  • Centresoma (centriolos)
  • Nucleus (with nucleus)
  • Rugged Endoplasmic Reticle
  • Liso endoplasmic
  • Ribosomes
  • Golgi's apparel (dictosomes)
  • Mitocondria
  • Movies
  • Lisosomes
  • Central Vacuum (with tonoplast)
  • Plates (chloroplasts, leukoplasts, chromoplasts)
  • Microbodies (peroxisomes, glioxisomes)
Additional structures
  • Flagelo(only in gametes)
  • Cylios
  • Flagelo
  • Cellular Pared
  • Plasmodesmos

Classification according to its genesis

Based on their genesis, organelles are classified into two groups:

  1. Orgánulos autogenetics, developed philosophically and ontitically from previous structures that become more complex.
  2. Origin letters endosimbioticfrom symbiosis with other organisms.

Endosymbiotic Organelles

They are organelles incorporated into the eukaryotic cell initially as endosymbiont bacteria. Organelles of endosymbiotic origin have their own genome, their own protein synthesis machinery, including ribosomes, and they multiply by bipartition, so that if they are experimentally removed from a cell they cannot be re-formed.

  • Mitochondria. All known eukaryotants have mitochondria, orgoulos derived from them, such as hydrogenosomes, or at least traces of mitochondrial genes incorporated into the nuclear genome.
  • Plates. There are two kinds of plates, the primary ones derive from cyanobacteria by endosymbiosis and the secondary ones by endosymbiosis of eukaryotic cells already equipped with plasto. The latter are much more complex. Plates have often been designated with other names depending on their pigmentation or the group in which they are presented. Chloroplastic denomination is usually used as a generic name.

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