Question

I need help with filling out the chart in the second picture, the first photo is the data needed to answer the questions

Figure 4.7 Osmosis demonstration. Athistle tube, covered at the broad end by a differential contains distilled water. b. The solute (starch is unable to pass the through in both directions. There is a net movement of water town and lower water concentration. c. Due to the incomi ally permeable membrane, contains a arch o n through the membrane tred, but the water or toward the inside of the thistletube to the Incoming watermolecules, the of the solution is in the the tube, where where there is corn syrup- solution - In this a. Before membrane . Ater Ein beaker b. Movement of water est note the level of liquid in the thistle tube, and then measure how far it travels up the thistle tube in to minutes: +5 mm. 4.5 cm (before) 2.8 cm Cafter 2. Calculate the speed of osmosis under these conditions: _L 13 mm/hr. 0 Conclusions: Osmosis • In which direction was there a net movement of water? Explain what is meant by "net movement" after examining the arrows in Figure 4.7b. . If the starch molecules moved from the thistle tube to the beaker, would there have been a net movement of water into the thistle tube? Why wouldn't large starch molecules be able to move across the membrane from the thistle tube to the beaker? • Explain why the water level in the thistle tube rose: In terms of solvent concentration, water more the area of water concentration to the area of differentially permeable membrane. water concentration across a Tonicity in Cells Tonicity is the relative concentration of solute (pan compared with inside the cell. • An isotonic solution has the same concentra is placed in an isotonic solution, there fore also of solvent (water), outside the cell nd therefore of water) as the cell. When a cell water into or out of the cell. Isotonic solution, there is no net movement of water into or out of

Answer 1

Answer:

Net movement of water is into the thistle tube as indicated by 3 up arrows and 2 down arrows.

Water moves in both direction. That is , into thistle tube and into the beaker. But effectively where into it moves more and the difference is called net movement.

If starch moves out of thistle tube, there will be change in tonicity of both solution and finally both will have same tonicity. Which result in no net movement.

Starch molecule are large enough not to pass through a differentially permeable membrane. Also the hypotonic distilled water won't allow starch to diffuse into beaker. This is because driving force of water is from hypertonic to hypertonic solution.

Water level in thistle tube rose as there is a net movement of water into thistle tube from beaker as thistle tube content is hypertonic compared to beaker.

Water moved from area of high water concentration to area of low water concentration.