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Lab 6 Diffusion

By Sunnichld Sep 15, 2013 325 Words
Bio Lab
Lab 6
Corn SyrupAloe Vera Gel
TimeBlue DyeRed DyeBlue DyeRed Dye
10 sec1 cm1cm1cm1cm
20 sec2cm2cm1.5cm2cm
30 sec2cm1cm1.5cm2.5cm
40 sec2cm.5cm1.5cm2.5cm
50 secN/C.5cmN/CN/C

Molecular WeightDistance TraveledSpeed of Diffusion
Blue Dye793g20.00mm600mm/hr
Red Dye496g45.00mm1350mm/hr

Aloe Vera Gel

Molecular WeightDistance TraveledSpeed of Diffusion
Blue Dye793g15mm450mm/hr
Red Dye496g25mm750mm/hr

1. The red dye diffused faster in both materials.

2. Yes, since the red dye is lighter it diffuses faster.

3. The rate of diffusion does change after time. The longer the dye sits the less it spreads in the liquid.

4. Cells must stay at a distance that is equal to theis diffusion. If they are farther away or closer than they should be they would not be able to perfom their necessary finctions.

5. The thicker or thinner the medium is affects the rate of diffusion because the thinner the medium the quicker the dye diffuses. The thicker it is the longer it takes for the dye to diffuse. This affects nutrient transport because it can be delayed or expedited based on how thick the fluid is.

Experiment 2

1. Iodine seeped into the bag causing it to turn purple.

2. The starch

3. No

4. The contains more starch. The beaker contains more glucose.

5. The beaker was more hypotonic in regards to the IKI solution while the baggie was more hypotonic in regards to the starch.

6. The iodine would seep out of the bag and turn the beaker solution purple.

8. The dialysis tubing represents a cell membrane.

9. Glucose will only continue to diffuse until there are equal amounts in the bag as well as in the beaker.

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