Exploring Diffusion and Osmosis in Biology

What is the purpose of using dialysis tubing in the experiment?

• To provide a source of nutrients

• To mimic the behavior of a cell membrane

• To measure the weight of different substances

• To act as a container for the experiment

Where can you find the handout for this lab?

• In the cell transport section on the teacher's webpage

• In the biology textbook

• In the chemistry section on the teacher's webpage

• In the school library

What does the dialysis tubing look like before it is rehydrated?

• Like a piece of string

• Like a sponge

• Like scotch tape

• Like a balloon

What are the two substances mixed inside the dialysis tubing?

• Cornstarch and table sugar

• Flour and water

• Salt and water

• Baking soda and vinegar

What is the initial weight of the dialysis bag before the experiment starts?

• 7.73 grams

• 3.25 grams

• 10.00 grams

• 5.50 grams

What indicator solution is added to the beaker?

• Potassium iodide

• Sodium chloride

• Calcium carbonate

• Magnesium sulfate

What color does the dialysis bag turn when iodine comes in contact with starch?

• Dark purple to black

• Red

• Green

• Blue

What change is observed in the weight of the dialysis bag after the experiment?

• It fluctuates

• It loses weight

• It gains weight

• It remains the same

What should be included in the lab report diagram?

• The beaker and a thermometer

• Only the dialysis bag

• Only the beaker and dialysis bag

• The beaker, iodine, dialysis bag, and arrows showing movement

What should be done after completing the diagram in the lab report?

• Discuss the results with a partner

• Answer the conclusion questions

• Submit the report immediately

• Clean the lab equipment