Lab Quiz #4 Flashcards
1
Q
When heat causes random motion of molecules and passively moves molecules in biological systems
A
Brownian movement
2
Q
Cell membranes are ___________ permeable
A
Differentially
3
Q
Phenoolphthalein is a pH indicator that turns red in the presence of a ________ solution
A
Basic
4
Q
In the experiment with dialysis tubing which molecules it ions passed through the tubing? Which did not?
A
The sodium hydroxide passed into the tubing from the beaker solution. Turning just the bag pink
the phenolphthalein and starch can not move across the membrane
Iodine passed through the membrane to turn the starch dark colored in the bag. The beaker remained light colored.
5
Q
What happens to a plant cell when immersed in a hypertonic solution?
A
The cell plasmolyzed
