Answer:
it allows only some materials to pass through and leave the cell.
Answer:
This statement is false I think sorry if im wrong
Answer is - Assimilation
Reasoning - photosynthetic organisms such as Algae or Plants assimilation phosphorus into their cell. Which they later transfer it to animals whom consume which then starts the cycle.
I answered the same question in another post but here I'll post what I wrote with reasoning why.