Saturday, September 24, 2011

Topic Cell Organelle Essay - Main Points!

Q) Describe the structure and function of Golgi body
Main points
Key idea:
Structural features of Golgi body
· Stack (of flattened sacs) + sys (of assoc vesicles)
· Made fr vesicles derived fr rER
· Ref to ‘forming’ or cis face + ’maturing’ or trans face
Key idea:
Functions of Golgi body
i) Chemically modifies proteins (e.g. attach carbo chain to protein - glycoprotein)
ii) Sorts, packages proteins into (transport or secretory) vesicles for transport w/n or out of cell via exocytosis
iii) Forms lysosome
iv) Lipid synthesis + transportation
v) Forms cell plate which becomes cell wall
Comments:
(i) Visualize the answer with the aid of a labelled picture of the organelle (refer to earlier post for URL)
(ii) Verbalize the answer + write down the main points w/o referring to the answer (use abbreviations)
(iii) Read again within the next 24h & once more within 72h (do not spend more than 10min)
(iv) sER is the primary site of lipid synthesis (e.g. cholesterol, phospholipids, steroid, fatty acid, etc) + drug detoxification

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