what are vesicles,tubules and cisternae in cell??answer in ur own words...
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Answer:
VESICLE
A vesicle is a structure within or outside a cell, consisting of liquid or cytoplasm enclosed by a lipid bilayer. Vesicles form naturally during the processes of secretion, uptake and transport of materials within the plasma membrane.
TUBULE
A tubule is a general term referring to small tube or similar type of structure. Specifically, tubule can refer to: a small tube or fistular structure. a minute tube lined with glandular epithelium. any hollow cylindrical body structure.
CISTERNA
A cisterna (plural cisternae) is a flattened membranedisk of the endoplasmic reticulum and Golgi apparatus. A Golgi stack may contain anywhere from three to twenty cisternae, but most contain about six cisternae. Golgi cisternae can be separated into four classes; cis, medial, trans, and TGN (trans-Golgi network).Each type of cisterna contains different enzymes to prevent any redundant enzymatic activity. Almost all cisternae in the Golgi apparatus exhibit multiple stacking. However, there are evolutionary lineages in which the stacked characteristic has been lost.
In plants, stacks of cisternae are known as dictyosomes.
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