The next 7 questions refer to the information give below.
A dialysis membrane into which an open glass tube is inserted is filled with red colored molasses which extends a short distance up the tube. The dialysis bag containing the glass tube insert are then put into a beaker of water. The membrane is permeable to water but not permeable to the molasses.
60. Which particle(s) is/are in random motion?
a. molasses
b. water
c. both
d. neither
61. Which particle(s) will move through the dialysis membrane?
a. molasses
b. water
c. both
d. neither
62. Movement of particles across the membrane is the result of
a. osmosis
b. neither osmosis nor active transport
c. energy use
d. active transport
63. After 24 hours, the size of the pouch will be
a. smaller
b. larger
c. the same
d. can't tell
64. After 24 hours, the container will contain
a. both water and molasses
b. neither water nor molasses
c. water only
d. molasses only
65. After 24 hours, the pouch will contain
a. both water and molasses
b. neither water nor molasses
c. water only
d. molasses only
66. After 24 hours, the level of liquid in the glass tube
a. will be lower
b. will be higher
c. will be the same
d. can't be determined
67. Which of the following statements about facilitated diffusion is correct?
a. using facilitated diffusion, the cell can accumulate more glucose inside the cell than there is outside the cell
b. facilitated diffusion involves carrier molecules in the cell membrane but energy is not needed
c. facilitated diffusion is used to exchange one substance for another
d. facilitated diffusion is a type of endocytosis
68. What part of the phospholipids layer is attracted to water?
a. hydrophilic tails
b. hydrophobic tails
c. hydrophilic heads
d. hydrophilic tails
