membrane trafficking Flashcards
concepts: explain the terms “exocytosis” and “endocytosis”, define “constitutive” and “regulated” secretion
1
Q
define endocytosis
A
process where cells take in materials through invagination of plasma membrane
2
Q
define exocytosis
A
process where most molecules secreted from cell; vesicle fuses with plasma membrane
3
Q
list the order in which the vesicle passes through the Golgi network in exocytosis
A
cis Golgi network → medial Golgi network → trans Golgi network → cell surface
4
Q
define constitutive secretion
A
steady stream of vesicles bud from trans-Golgi network and fuse with plasma membrane
5
Q
define regulated secretion
A
products concentrated and stored in secretory vesicles until EC signal stimulates secretion (e.g. neurotransmitters)
