Understand that in biology, vesicles refer to components within cells, not just any small container. Lysosomes are specialized vesicles containing enzymes.
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Not Always Visible
Vesicles are microscopic and not visible to the naked eye, important in descriptions of cellular processes. The vesicles fuse with the cell membrane to release their contents.
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Functional Variety
Vesicles have various functions such as storage, transport, and digestion within cells. The endoplasmic reticulum helps form transport vesicles.