Exocytosis & Endocytosis

Question 1

What is exocytosis?

Answer 1

a type of active transport when large molecules are released outside the cell e.g. neurotransmitter (Ach) / extracellular enzyme

Question 2

What is endocytosis?

Answer 2

a type of active transport when large molecules are absorbed into cells e.g. phagocytosis

Question 3

What is the process of exocytosis?

Answer 3

vesicles fuse with the cell membrane

contents of the vesicle are released on the outside of the cell

vesicle membrane joins the cell membrane

active = uses ATP

Question 4

What is the process of endocytosis?

Answer 4

object is surrounded by the cell membrane and taken into cytoplasm

object is surrounded by the cell membrane forming a vesicle

active = uses ATP

bacteria = phagocytosis