Diffusion and osmosis

Question 1

The diffusion of water molecules through a semi permeable membrane from an area of higher concentration. To an area of lower concentration is the definition of.

Answer 1

Osmosis

Question 2

Our experiment with the agar plates, using two different dye crystals was examining the relationship between the diffusion rate, and which experimental variable

Answer 2

Molecular weight

Question 3

The dialysis tubing in our experiment was semi permeable. Which substances were able to pass freely through this membrane.

Answer 3

The water only

Question 4

In the scenario where the dialysis tubing contents decreased in volume over time, where was the pure distilled water at the start of the experiment?

Answer 4

When the water was inside the tubing and placed in the 15% solution, the dialysis tubing lost volume

Question 5

What is the driving force for both simple, diffusion and osmosis

Answer 5

A concentration gradient

Question 6

A loss of tiger pressure inside plant cells resulting in the plasma. Membrane shrinking away from the cell wall is called.

Answer 6

Plasmolysis

Question 7

A patient in the hospital is given a relatively hypertonic solution via intravenous infusion. Both our body cells and our blood are made up of a large percentage of water. The cells making up the walls of the small vein act as a semi permeable barrier between the body tissue and the blood vessels. If water is able to pass freely into and out of the small vein, which direction will the fluid shift?will the water move from the main into the tissue or from the tissue into the vein? Why?

Answer 7

The solution is hypertonic, so the water will move from the tissue into the vein in order to dilute the solution

Question 8

Name two variables that might affect the rate of diffusion of a sub stance

Answer 8

Molecular weight and temperature