Organelles

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*[[Ribosomes|Ribosomes]] - host sites for protein synthesis: translation of [[MRNA|mRNA]] into [[Proteins|proteins]]. (80s)  
 
*[[Ribosomes|Ribosomes]] - host sites for protein synthesis: translation of [[MRNA|mRNA]] into [[Proteins|proteins]]. (80s)  
 
*[[Nucleus|Nucleus]] - contains chromosomes as a store of genetic information.  
 
*[[Nucleus|Nucleus]] - contains chromosomes as a store of genetic information.  
*[[Nuclear envelope|Nuclear envelope]] - surrounds the nucleus, allows passage of material into and out of the nucleus. Eg [[MRNA|mRNA]]   
+
*[[Nucleolus|Nucleolus]] - a dense structure located in the nucleus, makes ribosomal subunits.
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*[[Nuclear envelope|Nuclear envelope]] - surrounds the nucleus, allows passage of material into and out of the nucleus. E.g. [[MRNA|mRNA]]   
 
*[[Rough Endoplasmic Reticulum|Rough ER]] (endoplasmic reticulum) - located next to the nucleus, the rough ER has docked ribosomes for protein synthesis.   
 
*[[Rough Endoplasmic Reticulum|Rough ER]] (endoplasmic reticulum) - located next to the nucleus, the rough ER has docked ribosomes for protein synthesis.   
 
*[[Smooth endoplasmic reticulum|Smooth ER]] - endoplasmic reticulum without docked [[Ribosomes|ribosomes]] - synthesis of lipids and steroids  
 
*[[Smooth endoplasmic reticulum|Smooth ER]] - endoplasmic reticulum without docked [[Ribosomes|ribosomes]] - synthesis of lipids and steroids  
 
*[[Lysozyme|Lyso]][[Lysosome|some]] - contain [[Hydrolytic enzyme|hydrolytic enzyme]][[Hydrolytic enzymes|s]] for intracellular degredation  
 
*[[Lysozyme|Lyso]][[Lysosome|some]] - contain [[Hydrolytic enzyme|hydrolytic enzyme]][[Hydrolytic enzymes|s]] for intracellular degredation  
*[[Endosomes|Endosomes]] - sort endocytosed materials.
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*[[Endosomes|Endosomes]] - sort endocytosed materials.  
 
*[[Golgi apparatus|Golgi Body]] - post-transcriptional modification, separation and assortment of newly synthesised proteins  
 
*[[Golgi apparatus|Golgi Body]] - post-transcriptional modification, separation and assortment of newly synthesised proteins  
 
*[[Peroxisomes|Peroxisomes]] - contain [[Enzymes|enzymes]] for [[Oxidation|oxidation]] of toxins  
 
*[[Peroxisomes|Peroxisomes]] - contain [[Enzymes|enzymes]] for [[Oxidation|oxidation]] of toxins  

Revision as of 19:19, 16 November 2018

Organelles are separate compartments in eukaryotic cells that contain different enzymes and molecules and have specific roles in maintaining cell structure and function [1]. Each organelle has its own membrane in the form of a lipid bilayer, this allows compartmentalisation and segragation of different chemical activites. Different organelles can be seperated by centrifugation due to their varying densities.

Eukaryotic Organelles and their Functions:

Prokaryotic Organelles and their Functions:

References

  1. Alberts B, Johnson A, Lewis J, Raff M, Roberts K, Walter P. 2008. Molecular Biology of the Cell. 5th Edition. p695. Garland Science, New York
  2. Becker's World of the CellfckLRHardin, J. et al. (2012) Becker's World of the Cell. 8th ed. San Francisco: Pearson, p.253.
  3. Becker's World of the CellfckLRHardin, J. et al. (2012) Becker's World of the Cell. 8th ed. San Francisco: Pearson, p.422.
  4. Available: http://quizlet.com/14315658/function-of-organelles-in-both-prokaryotic-and-eukaryotic-cells-flash-cards/. Last accessed 25/11/14
  5. http://www.ivyroses.com/Biology/Cells/Prokaryotic-Cell-Structure.php


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