Difference between revisions of "Ribosomes"

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[[Ribosomes]] are responsible for assembling the [[Proteins]] of the [[Cell]]. Ribosomal [[Subunits]] are synthesized by the [[Nucleolus]]. Depending on the [[Protein]] [[Production]] level of a [[Particular]] [[Cell]], [[Ribosomes]] may [[Number]] in the millions. They are tiny [[Round]] [[Particles]].
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=== Definition ===
 
[[Ribosomes]] are typically composed of [[Two]] subunits: a [[Large]] [[Subunit]] and a [[Small]] [[Subunit]]. These [[Two]] [[Units]] [[Join]] together when the [[Ribosome]] [[Attaches]] to [[Messenger rna]] to [[Produce]] a [[Protein]] in the [[Cytoplasm]] (cyto-).
 
 
[[There]] are [[Two]] [[Places]] that [[Ribosomes]] usually [[Exist]] in the cell: suspended in the [[Cytosol]] and [[Bound]] to the [[Endoplasmic reticulum]]. These [[Ribosomes]] are called [[Free]] [[Ribosomes]] and [[Bound]] [[Ribosomes]] respectively. In both [[Cases]], the [[Ribosomes]] usually [[Form]] [[Aggregates]] called polysomes (poly-) ([[Also]] known as polyribosomes).
 
 
[[Free]] [[Ribosomes]] usually [[Make]] [[Proteins]] that will [[Function]] in the [[Cytosol]] [[While]] [[Bound]] [[Ribosomes]] usually [[Make]] [[Proteins]] that are exported or [[Included]] in the [[Cells]] [[Membranes]]. Interestingly [[Enough]], [[Free]] [[Ribosomes]] and [[Bound]] [[Ribosomes]] are interchangeable and the [[Cell]] can [[Change]] their [[Numbers]] according to [[Metabolic]] [[Needs]].
 
  
[[Ribosomes]] - [[Protein]] CONSTRUCTION TEAMS
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'''noun'''
[[Cells]] [[Need]] to [[Make]] [[Proteins]]. Those [[Proteins]] [[Might]] be used as [[Enzymes]] or as [[Support]] for other [[Cell]] [[Functions]]. When you [[Need]] to [[Make]] [[Proteins]], you [[Look]] for [[Ribosomes]]. [[Ribosomes]] are the [[Protein]] builders or the [[Protein]] synthesizers of the [[Cell]]. They are [[Like]] construction guys who [[Take]] one [[Amino acid]] at a [[Time]] and [[Build]] [[Long]] [[Protein]] [[Chains]].
 
  
[[Ribosomes]] could be in [[Many]] [[Places]] around the [[Cell]]. You [[Might]] [[Find]] them [[Floating]] in the [[Cytoplasm]]. Those [[Floating]] [[Ribosomes]] [[Make]] [[Proteins]] that will be used [[Inside]] of the [[Cell]]. Other [[Ribosomes]] are found on the [[Endoplasmic reticulum]]. [[Endoplasmic reticulum]] with [[Ribosomes]] attached is called [[Rough]]. It [[Looks]] bumpy [[Under]] a [[Microscope]]. Those attached [[Ribosomes]] [[Make]] [[Proteins]] that will be used [[Inside]] the [[Cell]] and [[Proteins]] made for [[Export]] ([[Outside]] the [[Cell]]).
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''singular: ribosome''
  
A [[Ribosome]] is not [[Just]] one [[Piece]]. [[There]] are [[Two]] [[Pieces]] or [[Subunits]]. Scientists named them 60-S and 30-S. When the [[Cell]] [[Needs]] to [[Make]] [[Protein]], [[Mrna]] is created in the [[Nucleus]]. The [[Mrna]] is then sent [[Into]] the [[Cell]] to the [[Ribosomes]]. When it is [[Time]] to [[Make]] the [[Protein]], the [[Two]] [[Subunits]] come together and combine with the [[Mrna]]. The [[Two]] [[Pieces]] [[Lock]] onto the [[Mrna]] and [[Start]] the [[Protein synthesis]].
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Plural form of '''[[ribosome]]''', i.e. any of the small round particles in a cell made up of RNA and protein that are primarily involved in the assembly of proteins by translating messenger RNA (a process called translation)
  
The [[Process]] of making [[Proteins]] is quite [[Simple]]. We [[Just]] explained that [[Mrna]] is made in the [[Nucleus]] and sent [[Into]] the [[Cell]]. The [[Mrna]] combines with the [[Ribosome]] [[Subunits]]. Another [[Nucleic acid]] [[Lives]] in the [[Cell]] - [[Trna]], which [[Stands]] for [[Transfer rna]], and it is bonded to [[Amino acids]]. With the [[Mrna]] offering [[Instructions]], the [[Ribosome]] connects to a [[Trna]] and [[Pulls]] [[Off]] the [[Amino acids]]. Slowly the [[Ribosome]] [[Makes]] a [[Long]] [[Amino acid]] [[Chain]] that [[Becomes]] a [[Protein]].
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=== See: [[Ribosome]] for further information. ===

Latest revision as of 00:04, 18 August 2019

Definition

noun

singular: ribosome

Plural form of ribosome, i.e. any of the small round particles in a cell made up of RNA and protein that are primarily involved in the assembly of proteins by translating messenger RNA (a process called translation)


See: Ribosome for further information.