What is one reason that a cell needs to regulate flow across the membrane? (points : 1)
the nucleus needs to bring in dna.

the cell needs carbon dioxide as a source of energy.

the cytoplasm needs to bring in organelles.

the cell needs to maintain homeostasis.

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.