1. DIFFUSION AND OSMOSIS LAB
Teams of 3-4

2. Question How will you explore these questions?
How is the movement of iodine and starch affected by a membrane?
How is the movement of glucose and water affected by a membrane?

3. Iodine/Starch setup What will you put in the beaker?
What will you put in the dialysis tubing?
What material(s), if any, will pass through the dialysis tubing?
WHY?

4. Glucose/water setup What will you put in the beaker?
What will you put in the dialysis tubing?
What material(s), if any, will pass through the dialysis tubing?
WHY?

5. Set it up! Materials Two different ones! Water Measuring tools
Cellulose Tubing
Iodine
Starch
Glucose
Glucose test strips
Scissors
Liquid 1
Liquid 2

6. Data collection 0 mM Mass of tube before Mass of tube after
Only for glucose setup
Glucose reading before
Glucose reading after
Only for starch setup
Color of tube/beaker before
Color of tube/beaker after
Other observations
0 mM
5 mM
15 mM
30 mM
60 mM
110 mM

7. Lab format Title Background Include headings
No I, YOU, WE, OUR, MY, YOU, YOUR
Title
10-15 words
Detailed!!!
Background
5-10 sentences
Definitions, examples
DO NOT SUMMARIZE LAB!

8. Lab format Hypothesis You did this!
Check for NO 1st / 2nd person language

9. Materials and Procedure separate
Lab format
Materials and Procedure separate
YOU DID THIS
Procedure a paragraph or a list!
DETAIL
“Logic” check
Data
Chart with necessary information
Before/After
Analysis
Hit all 6 checkpoints!