2: CELLS - CYTOSIS Flashcards
1
Q
What is cytosis?
A
- a transport mechanism for the movement of large quantities of molecules into/out of cells
- involves folding and moving of membranes which requires energy
2
Q
What is endocytosis?
A
bringing substances into a cell
3
Q
What are 2 examples of endocytosis?
A
- phagocytosis
- pinocytosis
4
Q
What is phagocytosis?
A
phagocytes engulfing pathogens
5
Q
What is pinocytosis?
A
fluids moving into a cell
6
Q
How are substances moved into cells in endocytosis?
A
particles are enclosed in vesicles made from the cell surface membrane and transported into the cell
7
Q
How are substances moved out of cells in exocytosis?
A
vesicles containing large particles are fused with the cell surface membrane and released from the cell
