1. Describe two variables that affect the rate of diffusion.
2. Why do you believe the carbamide was non able to spread through the 20 MWCO membrane? How good did the consequences compare with your anticipation?
3. Describe the consequences of the efforts to spread glucose and albumin through the 200 MWCO membrane. How good did the consequences compare with your anticipation?
4. Put the followers in order from smallest to largest molecular weight: glucose. Na chloride. albumen. and urea.
Activity 2 Simulated Facilitated Diffusion
1. Explain one manner in which facilitated diffusion is the same as simple diffusion and one manner in which it differs.
2. The larger value obtained when more glucose bearers were present corresponds to an addition in the rate of glucose conveyance. Explain why the rate increased. How good did the consequences compare with your anticipation?
3. Explain your anticipation for the consequence Na+Cl? might hold on glucose conveyance. In other words. explicate why you picked the pick that you did. How good did the consequences compare with your anticipation? Activity 3 Simulating Osmotic Pressure
1. Explain the consequence that increasing the Na+Cl? concentration had on osmotic force per unit area and why it has this consequence. How good did the consequences compare with your anticipation?
2. Describe one manner in which osmosis is similar to simple diffusion and one manner in which it is different.
3. Solutes are sometimes measured in milliosmoles. Explain the statement.
“Water pursuits milliosmoles. ”
4. The conditions were 9 millimeters albumin in the left beaker and 10 millimeters glucose in the right beaker with the 200 MWCO membrane in topographic point. Explain the consequences. How good did the consequences compare with your anticipation?
Activity 4 Imitating Filtration
1. Explain in your ain words why increasing the pore size increased the filtration rate. Use an analogy to back up your statement. How good did the consequences compare with your anticipation?
2. Which solute did non look in the filtrate utilizing any of the membranes? Explain why.
3. Why did increasing the force per unit area increase the filtration rate but non the concentration of solutes? How good did the consequences compare with your anticipation?
Activity 5 Simulating Active Transport
1. Describe the significance of utilizing 9 mM Na chloride inside the cell and 6 millimeter K chloride outside the cell. alternatively of other concentration ratios.
2. Explain why there was no Na transport even though ATP was present. How good did the consequences compare with your anticipation? 3. Explain why the add-on of glucose bearers had no consequence on Na or K conveyance. How good did the consequences compare with your anticipation? 4. Make you believe glucose is being actively transported or transported by facilitated diffusion in this experiment? Explain your reply.
