Lab Quiz #1 Fall 2008.

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Presentation transcript:

Lab Quiz #1 Fall 2008

1. What is the name of this structure?

2. You perform the Egg Lab and come up with the data below 2. You perform the Egg Lab and come up with the data below. Which beaker (X or Y below) contains the solution that is hypotonic to the egg? Explain how you can use the data below to determine this. Egg in Beaker X Weight before soaking in beaker = 88 g Weight after soaking in beaker = 82.5 g Egg in Beaker Y Weight after soaking in beaker = 97.2 g

3. What is the name of this structure?

4. Given that: The membrane separating Side A & Side B is only permeable to the triangular solutes. At Time 1, the triangular solutes were added to Side A and the round solutes were added to Side B. Question - at Time 2 (5 mns later): what will happen to the triangular solutes in terms of diffusion? what will happen to the round solutes in terms of diffusion? Side A Side B

5. Given that: The membrane separating Side A & Side B is only permeable to the triangular solutes. The membrane is also permeable to water. At Time 1, the triangular solutes were added to Side A, and the round solutes were added to Side B. Question: at Time 2 (5 mns later) explain what will happen in terms of osmosis? Side A Side B

6. What is the function of this structure?

7. When putting the microscope away, which objective should be in place? 8. What types of information should be recorded when making good observations?