When a muscle cell demands energy to contract, what happens to atp? a. atp makes more atp. b. atp is hydrolyzed and turns into adp c. atp is phosphorylated. d. atp is shuttled to the mitochondria

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.