describe the movement of water across a cell membrane and the effects on the cell that is in a hypertonic, hypotonic or an isotonic environment surrounding a cell.

answer; i believe the correct answer is ( proteins );

ok

explanation:

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds