Question:
1) In an experiment, a dialysis bag is filled with a solution containing starch and glucose and placed in a beaker of water for one hour. Check all the following that are true:
a. The solutes in the dialysis bag are starch and glucose
b. Glucose is the largest solute in the dialysis bag
c. To test the bag and the beaker water for starch at the end of the experiment, you used and indicator called bromothymol blue.
d. At the end of the experiment, an equilibrium will be established with equal concentrations glucose inside and outside the bag
e. Starch will pass through the bag
2.In an experiment, a dialysis bag is filled with a solution containing starch and glucose and placed in a beaker of water. After 1 hour the water outside in the beaker is tested for starch and glucose. Which is true?
a. The water in beaker will turn purplish black if IKI is added
b. A glucose test strip dipped in the beaker water will change from a yellow to green color.
c. All of the above
d. None of the above
3.A dialysis bag is filled with 3% sucrose solution and placed in a beaker contains 30% sucrose solution. Check all that are true:
a. The solution in the beaker is hypotonic to that in the bag with 3% sucrose solution
b. Water is the solvent inside the bag and outside in the beaker.
c Water will move out of the bag and into the beaker by osmosis
d. The bag will swell and pop
e. The water moves across the selectively permeable membranes toward the region where the solute concentration is higher.
f. if the bag were a plant cell, it would lose turgor pressure.
4.Beaker 2 is filled with 3% sucrose solution. 3 bags filled with the following solutions were placed in the beaker:
Bag 1 – 30% sucrose
Bag 2- 15% sucrose
Bag 3 – 3% surcose
Which bag has solute concentrations that is isotonic to that of the beaker?
a. Bag1
b. Bag2
c. Bag3
d. None
Which of the following will occur in this experiment?
a. Bag1 loses water by osmosis
b. Bag 2 lose water by osmosis
c. Bag 1 and 2 gain water
d. Bag 1,2,3 gain water
The solution in the beaker is _ to that in Bag 2.
a. hypotonic
b. hypertonic.
c. isotonic
d. All the above
5.An animal cell placed in a hypotonic will?
6.A plant cell placed in a hypotonic will?
