I think it’s d sorry if I’m wrong
Answer:
The heart beats slowly because oxygen consumption is reduced
The correct answer is be sure that your instrument is calibrated properly. If your instrument isn't calibrated, then your data will be inconsistent.
1.) It is True that when a cell is put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane.
2) It is False that a when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell.
3) It is True that when a cell is out into a hypotonic solution, there is net movement.
4) It is False that the movement of any solvent across a semi-permeable membrane is called osmosis.