‘Discuss how cell organelles are structurally and functionally interrelated’ The Golgi body is a membrane bound organelle mainly found in eukaryotic cells. The Golgi body has two faces the cis face, where the substances enter from the RER for processing and the trans face, where they exit the RER in the form of tiny vesicles. (Davidson, M. (2004) Molecular expressions http://micro. magnet. fsu. edu/cells/golgi/golgiapparatus. html) The rough endoplasmic reticulum is the site where most cell membrane components and materials that are to be removed from the cell are made. (Alberts et al, 2004 pg. 9). According to Alberts et al 2004, ‘the Golgi apparatus performs several functions in close partnership with the RER’. Proteins and lipids built in the rough endoplasmic reticulum bud off into vesicles that move through the cytoplasm until they reach the Golgi. These then fuse with the membrane of the Golgi and release the molecules inside into the organelle. Once inside, the compounds are further processed by the Golgi apparatus, which adds or removes pieces. Other products are returned to the endoplasmic reticulum or may undergo maturation to become lysosomes. (Davidson,M. 2004) Molecular expressions. http://micro. magnet. fsu. edu/cells/golgi/golgiapparatus. html) A lysosome consists of digestive enzymes surrounded in a sac. The main function of the lysosome is to serve as digestion compartments for cellular materials that are ageing or are no longer useful. (Davidson, M. (2004) Molecular expressions http://micro. magnet. fsu. edu/cells/lysosomes/lysosomes. html) Mitochondria are organelles that carry out cellular respiration in almost all eukaryotic cells. They convert the chemical energy of foods like sugars to the chemical energy ATP. (Campbell et al, 2009 pg. 63).

Without mitochondria, complex animals, like humans would not exist because their cells would only be able to obtain energy from anaerobic respiration. (Davidson, M. (2004) Molecular expressions http://micro. magnet. fsu. edu/cells/mitochondria/mitochondria. html) Bibliography Alberts, B. et al (2004) Essential Cell Biology. 2nd edition. New York: Garland Science Campbell, N et al (2009) Biology Concepts and connections. 6th edition. San Fransisco: Pearson Benjamin Cummings Campbell Davidson, M. (2004) Molecular expressions http://micro. magnet. fsu. edu/cells/mitochondria/mitochondria. html (Accessed 12. 10. 11)