Question

Diffusion, osmosis, and active transport all can deal with the movement of molecules across which cell part? A. cell wall B. cell membrane C. chromosome D. cytoplasm

Answer 1

Cell membranes protect all organelles therefore molecules need to pass through the cell membranes to get to the organelles

....... I think :)

Answer 2

B. Cell membrane

Molecules can move across cell membranes through diffusion, osmosis, and active transport.