Which statement is NOT TRUE ?. Exocytosis and endocytosis are regulated secretio

Question

Which statement is NOT TRUE?. Exocytosis and endocytosis are regulated secretion and importing processes because?

A. special proteins (SNARES and Clathrin) coat the membrane components guiding vesicles to be exported or imported with cargo materials

B. exocytosis vesicles are decorated with y-SNARE proteins that dock with t-SNARE proteins

C. endocytosis vesicles are decorated with adpatins and clathrin coating proteins that determines their destination

D. both exo and ando-cytic vesicles are guided by a protein coat that delivers some sort of a bar code that determines its destination

E. vesicles transit randomly and fuse randomly with target organelles

**I originally believed it to be B. since it Transport vesicles are tagged with v-SNARE (Soluble NSF Attachment Protein Receptor) and when vesicles arrive at the destination site they recognize t-SNAREs that promote vesicle docking but was informed that was incorrect** Please help

Explanation / Answer

The correct answer would be:E.vesicles transit randomly and fuse randomly with target organelles.

Reason:In regulated secretion, vesicles are derived from the trans face of the Golgi complex and are stored in cytoplasm.They do not fuse with plasma membrane until the cell receives a signal for secretion.

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