what is the difference between (( exocytosis, endocytosis )) and (( diffusion )) ?

Question

anonymous · Answer

exocytosis means removal of excretory material from the cell
endocytosis means entrance of food in cell it can be by phagocytosis or etc
diffusion means movement of molecules from higher concentration to lower concentration

anonymous · Answer

thank you heena ..but i mean also in diffusion materials can enter or leave the cell so what is the role of exo .. and endo ..?!  can get what i mean?!

anonymous · Answer

sometimes diffusion not work means it works on concentration gradient rit if in cell its not true dat evry time u got concentration deifference but cell still need food so these process are used

anonymous · Answer

exocytosis and endocyosis are in control of cell while diffusion ony depend on concentration difference

anonymous · Answer

*only

anonymous · Answer

I understood ...thank you so much  ..

anonymous · Answer

yw