Determine the tonicity (hypo-, hyper- or isotonic) of the "cell" and the environment for each experiment below and predict the net movement of water and the solutes by circling the appropriate responses. Assume the "cell membrane" is permeable to all solutes. Hint: with the exception of NaCl, an ionic compound, all solutes are molecular compounds.
Experiment #1
"Cell": 0.03 M sucrose, 0.02 M glucose
Environment: 0.01 M sucrose, 0.01 M glucose, 0.01 M fructose
"Cell": Hypotonic or Hypertonic or Isotonic?
Environment: Hypotonic or Hypertonic or Isotonic?
Net movement of water: Into "Cell" or Out of "Cell" or at Equilibrium?
Net movement of solute:
Fructose: Into Cell or Out of Cell?
Sucrose: Into Cell or Out of Cell?
Glucose: Into Cell or Out of Cell?
Experiment #2
"Cell": 0.01 M sucrose
Environment: 0.01 M ethanol
"Cell": Hypotonic or Hypertonic or Isotonic?
Environment: Hypotonic or Hypertonic or Isotonic?
Net movement of water: Into "Cell" or Out of "Cell" or at Equilibrium?
Net movement of solute:
Sucrose: Into Cell or Out of Cell?
Ethanol: Into Cell or Out of Cell?
Experiment #3
"Cell": 0.01 M sucrose
Environment: 0.01 M NaCl
"Cell": Hypotonic or Hypertonic or Isotonic?
Environment: Hypotonic or Hypertonic or Isotonic?
Net movement of water: Into "Cell" or Out of "Cell" or at Equilibrium?
Net movement of solute:
Sucrose: Into Cell or Out of Cell?
NaCl: Into Cell or Out of Cell?