What is it called when the vesicle and target membrane fuse?

What is it called when the vesicle and target membrane fuse?

• Correct Answer: vesicle fusion
• pathogen fusion
• tendon fusion
• enamel fusion

Explanation: For a vesicle to release its contents to a cell organelle or to the outside of the cell, the vesicle and target membrane must fuse. This process is called vesicle fusion. Fusion between the vesicle and a target membrane occurs in one of two ways: full fusion or "kiss-and-run" fusion. In a full fusion process, the vesicle phospholipids fully incorporate into the plasma membrane. The vesicle can only be reformed and by a clathrin-coat-dependent process. With kiss-and-run fusion, the vesicle reforms after the release of its material. This allows the rapid release of materials from a synaptic vesicle. In this type of fusion, the vesicle forms a fusion pore or porosome in the presynaptic membrane and releases its neurotransmitters across the synapse, after which the vesicle reforms, allowing it to be reused.

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