18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.

*furiously writes F until there was a true statement*

8. F (isotonic is where water diffuses in and out of the cell in equal rates to which it could move back and forth)

D.F (hypertonic solution is where the water will diffuse out from the cell as hypertonic solution's concentration is higher than the concentration of solute within the cell)

c.F (" but the water should be diffuse into the cell)

d.F (osmosis only related to water)

e.T (carrier proteins has the ability—it changes its shape to allow the molecules to pass through to the other side of the plasma membrane)

f. F (cuz facilitated diffusion issa passive transport and a passive transport must be going down the gradient aka from high to lower concentration)

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

true is the final answer!