1.1 Cell Membrane Transport Mechanisms and Permeability
1. Which of the following is NOT a passive process?
-Vesicular Transport
2. When the solutes are evenly distributed throughout a solution, we say the solution has reached _______.
- Equilibrium
3. Which of the following does NOT describe the plasma membrane?
- Impermeable
4. Which of the following requires a membrane-bound carrier for transport?
- Facilitated Diffusion
5. Which of the following solutes would move the fastest?
- Sodium Chloride
6. For solutes that are membrane permeable, which of the following does NOT affect the rate of diffusion?
- The Kinetic energy of the Solute
7. In this activity, the solutes were transported through the dialysis membrane by _______.
- Simple Diffusion
8. Through which membrane(s) would sodium chloride diffuse?
- 50 MWCO, 100MWCO, and 200 MWCO
1.2 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following statements about carrier proteins is FALSE?
- They assist in simple diffusion.
2. Which of the following statements about facilitated diffusion is FALSE?
The movement of a given solute usually occurs in both directions (into and out of the cell).
3. Which of the following is NOT a reason why a solute would require facilitated diffusion?
The solute directly requires ATP for its transport.
4. Which of the following would increase the rate of facilitated diffusion?
increasing the steepness of the concentration gradient
5. Simple diffusion and facilitated diffusion both _______.
move solutes with their concentration gradient
6. Which of the following would decrease the rate of facilitated diffusion?
decreasing the number of carrier proteins
7. What happens to facilitated diffusion when the protein carriers become saturated?
The maximum rate of transport will occur
8. What happened when sodium chloride was added as a solute in the left beaker?
There was no change in the transport rate of glucose.
1.3 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following statements about osmosis is FALSE?
Water moves toward the solution with the lowest concentration of solutes.
2. A Hypertonic solution:_______.
will induce cell shrinkage
3. If a membrane is impermeable to solutes, which of the following is true?
Water will move toward the more concentrated solutes.
4. Osmotic pressure is measured in units of _______.
mm Hg
5. Which of the following generated osmotic pressure?
sodium chloride, glucose and albumin generated osmotic pressure.
6. Which of the following would result in NO change in osmotic pressure across a membrane?
The solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane.
7. With the experimental conditions set at 10 mM glucose and 9 mM albumin, and the 200 MWCO membrane in place, which of the following is true?
The Net Movement Of Water Is Toward The Albumin
8. A cell is immersed in a beaker of solution. The cell membrane is permeable to water but impermeable to solutes. If the intracellular concentration is 10 mM and the solution is 20 mM, which of the following is true?
The Cell Will Shrink
1.4 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following is required for filtration?
Both a membrane and a hydrostatic pressure gradient are required
2. The presence or absence of a solute in the filtrate depends on _______.
The molecular weight and size of the solute as well as the MWCO and pore size of the membrane
3. An example of filtration occurs in the kidney and:
Ions and glucose filter from the capillary into the kidney tubule
4. Which of the following resulted in an increase in the filtration rate?
Both increasing the pore size and increasing the pressure above the beaker are correct
5. Which solute did NOT appear in the filtrate using the 200 MWCO membrane?
Charcoal
6. Which of the following was NOT observed during this activity?
Increasing the rate of filtration increased the concentration of solutes in the filtrate.
7. Increasing the pressure above the beaker is analogous to _______.
An Increase in blood pressure
1.5 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following can be true of both active transport and facilitated diffusion?
Lipid-insoluble solutes are transported across the membrane by a carrier protein.
2. Coupled transporters that move solutes in the same direction are called _______.
symporters
3. Which of the following describes the concentration of ions when the cell is at rest?
The concentration of potassium is higher inside the cell.
4. Which of the following is the driving force for the sodium-potassium pump?
ATP hydrolysis
5. The sodium-potassium pump can transport _______.
Only if sodium and potassium are available
6. Which of the following increased the rate of sodium-potassium transport?
Increasing the # of membrane pumps
7. Which of the following describes the movement of ions by the sodium-potassium pump?
Potassium is moved into the cell
8. What is the type of transport supplied by the glucose carriers in the activity?
Facilitated Diffusion
Cell Lab Review Sheet
1. Referring to the Osmosis activity, for NaCl, which MWCO membrane(s) provided for the net movement of water without movement of NaCl?
20 MWCO
2. Passive transport includes: ____________ (choose all that apply)
(All (3) Are Correct)
Osmosis
Simple Diffusion
Facilitated Diffusion
3. According to your results, which solute had the highest molecular weight?
Albumin
4. Referring to the facilitated diffusion simulation, are substances able to travel against their concentration gradient?
No
5. Referring to the filtration activity, which solute did not appear in the filtrate using any of the membranes?
Powdered Charcoal
6. Referring to the facilitated diffusion results, choose two ways to increase the rate of glucose transport.
(Both Are Correct)
Increase amount of glucose in solution
Increase the number of glucose carriers in the membrane
7. If two solutions having different osmolarities are separated by a water-permeable membrane, will there be a change in the volume of the two compartments if the membrane is impermeable to solutes?
Yes
8. How do you think a decrease in blood pressure would affect filtration in the kidneys?
The Rate Of Filtration Would Decrease
9. Referring to the osmosis simulation, is water excluded by any of the dialysis membranes?
No
10. Based on what you learned about diffusion rates of different solutes, which solute would have the highest rate of diffusion through a 200 MWCO membrane?
Na ^+/Cl^ -
11. Referring to the Osmosis activity, for glucose, which MWCO membrane(s) provided for the net movement of glucose without net movement of water?
200 MWCO
12. Referring to the filtration activity, what happened when you increased the driving pressure?
The Filtration Rate Increases
13. An active process is one in which the cell uses the bond energy of ATP to move solutes across the membrane.
True
14. If two solutions having different osmolarities are separated by a water-permeable membrane, will there be a change in the volume of the two compartments if the membrane is permeable to solutes?
No
15. Increasing solute concentration increases osmotic pressure.
True
16. What change in cell volume will occur when a cell is placed in a hypotonic solution?
Volume Increase
17. Based on what you learned in the Osmotic Pressure activity, is osmotic pressure generated if solutes freely diffuse?
No
18. Referring to the active transport simulation, are Na+ and K+ transported in the same direction?
No
19. When food is pickled for human consumption, as much water as possible is removed from the food. What method is used to achieve this dehydrating effect?
Osmosis
20. Referring to the filtration simulation, what characteristic of a solute determines whether or not it passes through a filtration membrane?
Molecular Weight
21. What change in cell volume will occur when a cell is placed in a hypertonic solution?
Volume Decrease
22. Based on what you learned in the Simulating Dialysis (Simple Diffusion) activity, which solute(s) would pass through a 100 MWCO membrane? (choose all that apply)
(Both Are Correct)
Na+/Cl-
Urea
23. How can the concentration of water in a solution be decreased? (choose all that apply)
(Both Are Correct)
Add Solutes To The Solution
Remove Water From The Solution
24. What single characteristic of the differentially permeable membranes used in the simple diffusion and filtration experiments determines which substances pass through them?
Size Of The Pores
25. Velocity of molecular movement __________________ (choose all that apply)
(Both Are Correct)
Is Lower In Larger Molecules
Increases With Increasing Temperature
Q 1.1 Cell Lab Quiz
1. Referring to the Facilitated Diffusion results, what was the glucose transport rate (mM/min) when the glucose concentration was 8 mM and there were 700 glucose carrier proteins?
0.0031
2. A 2 M NaCl solution and a 2 M glucose solution are separated by a membrane that is permeable to water, but not to the NaCl or glucose. Which way will net water movement be?
Towards The NaCl Side
3. We determined that NaCl does not pass through a 20 MWCO membrane. If we increase the hydrostatic pressure on one side of that membrane can we force the NaCl through?
No
4. If a solution was filtered through two membranes, a 100 MWCO membrane and thena 20 MWCO membrane, what would you expect to find in the filtrate? (choose all that apply)
(Both Are Correct)
Water
Particles Smaller Than 20 Molecular Weight
5. Which of the following expresses the concentration of a solution?
20mM
6. Assume the left beaker contains 3 mM NaCl, 8 mM glucose, and 9 mM albumin. The right beaker contains 9 mM NaCl, 9 mM glucose, and 39 mM albumin. Furthermore, the dialysis membrane is permeable to all substances except albumin. Which way will NaCl move?
To The Left Beaker
7. Which process does not belong with the others?
Simple Diffusion
8. Referring to the Osmosis results, what osmotic pressure (mm Hg) was generated with 9.00 mM albumin on the left and 10.00 mM glucose on the right and the 200 MWCO membrane?
153
9. In order for a sodium-potassium pump to work, which of the following are required? (choose all that apply)
(All (3) Are Correct)
Na+
ATP
K+
10. Movement of molecules or ions from a region of higher concentration to a region of lower concentration via a process that does not require cellular energy is called
Simple Diffusion
Q 1.2 Cell Lab Quiz
1. Assume the left beaker contains 3 mM NaCl, 8 mM glucose, and 9 mM albumin. The right beaker contains 9 mM NaCl, 9 mM glucose, and 39 mM albumin. Furthermore, the dialysis membrane is permeable to all substances except albumin. Which way will albumin move?
Not Move
2. Referring to the Filtration results, what amount of powdered charcoal (mg/ml) was found in the filtrate when the 50 MWCO membrane was used?
0.00
3. Passive transport processes require less ATP than active transport processes.
False
4. If you consider the solute concentration gradient during osmosis, which way will net water movement be?
Movement From High To Low Concentration
5. As the number of membrane transport proteins increases, the rate of facilitated diffusion
Increases
6. Assume the left beaker contains 3 mM NaCl, 8 mM glucose, and 9 mM albumin. The right beaker contains 9 mM NaCl, 9 mM glucose, and 39 mM albumin. Furthermore, the dialysis membrane is permeable to all substances except albumin. Which way will glucose move?
To The Left Beaker
7. Which process does not belong with the others?
Simple Diffusion
8. If the pressure gradient is great enough, any size solute can be filtered through a membrane without harming the membrane
False
9. Which of the following is not a passive transport process?
None Of The Above
10. Which of the following expresses the concentration of a solution?
20mM
1. Which of the following is NOT a passive process?
-Vesicular Transport
2. When the solutes are evenly distributed throughout a solution, we say the solution has reached _______.
- Equilibrium
3. Which of the following does NOT describe the plasma membrane?
- Impermeable
4. Which of the following requires a membrane-bound carrier for transport?
- Facilitated Diffusion
5. Which of the following solutes would move the fastest?
- Sodium Chloride
6. For solutes that are membrane permeable, which of the following does NOT affect the rate of diffusion?
- The Kinetic energy of the Solute
7. In this activity, the solutes were transported through the dialysis membrane by _______.
- Simple Diffusion
8. Through which membrane(s) would sodium chloride diffuse?
- 50 MWCO, 100MWCO, and 200 MWCO
1.2 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following statements about carrier proteins is FALSE?
- They assist in simple diffusion.
2. Which of the following statements about facilitated diffusion is FALSE?
The movement of a given solute usually occurs in both directions (into and out of the cell).
3. Which of the following is NOT a reason why a solute would require facilitated diffusion?
The solute directly requires ATP for its transport.
4. Which of the following would increase the rate of facilitated diffusion?
increasing the steepness of the concentration gradient
5. Simple diffusion and facilitated diffusion both _______.
move solutes with their concentration gradient
6. Which of the following would decrease the rate of facilitated diffusion?
decreasing the number of carrier proteins
7. What happens to facilitated diffusion when the protein carriers become saturated?
The maximum rate of transport will occur
8. What happened when sodium chloride was added as a solute in the left beaker?
There was no change in the transport rate of glucose.
1.3 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following statements about osmosis is FALSE?
Water moves toward the solution with the lowest concentration of solutes.
2. A Hypertonic solution:_______.
will induce cell shrinkage
3. If a membrane is impermeable to solutes, which of the following is true?
Water will move toward the more concentrated solutes.
4. Osmotic pressure is measured in units of _______.
mm Hg
5. Which of the following generated osmotic pressure?
sodium chloride, glucose and albumin generated osmotic pressure.
6. Which of the following would result in NO change in osmotic pressure across a membrane?
The solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane.
7. With the experimental conditions set at 10 mM glucose and 9 mM albumin, and the 200 MWCO membrane in place, which of the following is true?
The Net Movement Of Water Is Toward The Albumin
8. A cell is immersed in a beaker of solution. The cell membrane is permeable to water but impermeable to solutes. If the intracellular concentration is 10 mM and the solution is 20 mM, which of the following is true?
The Cell Will Shrink
1.4 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following is required for filtration?
Both a membrane and a hydrostatic pressure gradient are required
2. The presence or absence of a solute in the filtrate depends on _______.
The molecular weight and size of the solute as well as the MWCO and pore size of the membrane
3. An example of filtration occurs in the kidney and:
Ions and glucose filter from the capillary into the kidney tubule
4. Which of the following resulted in an increase in the filtration rate?
Both increasing the pore size and increasing the pressure above the beaker are correct
5. Which solute did NOT appear in the filtrate using the 200 MWCO membrane?
Charcoal
6. Which of the following was NOT observed during this activity?
Increasing the rate of filtration increased the concentration of solutes in the filtrate.
7. Increasing the pressure above the beaker is analogous to _______.
An Increase in blood pressure
1.5 Cell Membrane Transport Mechanisms And Permeability
1. Which of the following can be true of both active transport and facilitated diffusion?
Lipid-insoluble solutes are transported across the membrane by a carrier protein.
2. Coupled transporters that move solutes in the same direction are called _______.
symporters
3. Which of the following describes the concentration of ions when the cell is at rest?
The concentration of potassium is higher inside the cell.
4. Which of the following is the driving force for the sodium-potassium pump?
ATP hydrolysis
5. The sodium-potassium pump can transport _______.
Only if sodium and potassium are available
6. Which of the following increased the rate of sodium-potassium transport?
Increasing the # of membrane pumps
7. Which of the following describes the movement of ions by the sodium-potassium pump?
Potassium is moved into the cell
8. What is the type of transport supplied by the glucose carriers in the activity?
Facilitated Diffusion
Cell Lab Review Sheet
1. Referring to the Osmosis activity, for NaCl, which MWCO membrane(s) provided for the net movement of water without movement of NaCl?
20 MWCO
2. Passive transport includes: ____________ (choose all that apply)
(All (3) Are Correct)
Osmosis
Simple Diffusion
Facilitated Diffusion
3. According to your results, which solute had the highest molecular weight?
Albumin
4. Referring to the facilitated diffusion simulation, are substances able to travel against their concentration gradient?
No
5. Referring to the filtration activity, which solute did not appear in the filtrate using any of the membranes?
Powdered Charcoal
6. Referring to the facilitated diffusion results, choose two ways to increase the rate of glucose transport.
(Both Are Correct)
Increase amount of glucose in solution
Increase the number of glucose carriers in the membrane
7. If two solutions having different osmolarities are separated by a water-permeable membrane, will there be a change in the volume of the two compartments if the membrane is impermeable to solutes?
Yes
8. How do you think a decrease in blood pressure would affect filtration in the kidneys?
The Rate Of Filtration Would Decrease
9. Referring to the osmosis simulation, is water excluded by any of the dialysis membranes?
No
10. Based on what you learned about diffusion rates of different solutes, which solute would have the highest rate of diffusion through a 200 MWCO membrane?
Na ^+/Cl^ -
11. Referring to the Osmosis activity, for glucose, which MWCO membrane(s) provided for the net movement of glucose without net movement of water?
200 MWCO
12. Referring to the filtration activity, what happened when you increased the driving pressure?
The Filtration Rate Increases
13. An active process is one in which the cell uses the bond energy of ATP to move solutes across the membrane.
True
14. If two solutions having different osmolarities are separated by a water-permeable membrane, will there be a change in the volume of the two compartments if the membrane is permeable to solutes?
No
15. Increasing solute concentration increases osmotic pressure.
True
16. What change in cell volume will occur when a cell is placed in a hypotonic solution?
Volume Increase
17. Based on what you learned in the Osmotic Pressure activity, is osmotic pressure generated if solutes freely diffuse?
No
18. Referring to the active transport simulation, are Na+ and K+ transported in the same direction?
No
19. When food is pickled for human consumption, as much water as possible is removed from the food. What method is used to achieve this dehydrating effect?
Osmosis
20. Referring to the filtration simulation, what characteristic of a solute determines whether or not it passes through a filtration membrane?
Molecular Weight
21. What change in cell volume will occur when a cell is placed in a hypertonic solution?
Volume Decrease
22. Based on what you learned in the Simulating Dialysis (Simple Diffusion) activity, which solute(s) would pass through a 100 MWCO membrane? (choose all that apply)
(Both Are Correct)
Na+/Cl-
Urea
23. How can the concentration of water in a solution be decreased? (choose all that apply)
(Both Are Correct)
Add Solutes To The Solution
Remove Water From The Solution
24. What single characteristic of the differentially permeable membranes used in the simple diffusion and filtration experiments determines which substances pass through them?
Size Of The Pores
25. Velocity of molecular movement __________________ (choose all that apply)
(Both Are Correct)
Is Lower In Larger Molecules
Increases With Increasing Temperature
Q 1.1 Cell Lab Quiz
1. Referring to the Facilitated Diffusion results, what was the glucose transport rate (mM/min) when the glucose concentration was 8 mM and there were 700 glucose carrier proteins?
0.0031
2. A 2 M NaCl solution and a 2 M glucose solution are separated by a membrane that is permeable to water, but not to the NaCl or glucose. Which way will net water movement be?
Towards The NaCl Side
3. We determined that NaCl does not pass through a 20 MWCO membrane. If we increase the hydrostatic pressure on one side of that membrane can we force the NaCl through?
No
4. If a solution was filtered through two membranes, a 100 MWCO membrane and thena 20 MWCO membrane, what would you expect to find in the filtrate? (choose all that apply)
(Both Are Correct)
Water
Particles Smaller Than 20 Molecular Weight
5. Which of the following expresses the concentration of a solution?
20mM
6. Assume the left beaker contains 3 mM NaCl, 8 mM glucose, and 9 mM albumin. The right beaker contains 9 mM NaCl, 9 mM glucose, and 39 mM albumin. Furthermore, the dialysis membrane is permeable to all substances except albumin. Which way will NaCl move?
To The Left Beaker
7. Which process does not belong with the others?
Simple Diffusion
8. Referring to the Osmosis results, what osmotic pressure (mm Hg) was generated with 9.00 mM albumin on the left and 10.00 mM glucose on the right and the 200 MWCO membrane?
153
9. In order for a sodium-potassium pump to work, which of the following are required? (choose all that apply)
(All (3) Are Correct)
Na+
ATP
K+
10. Movement of molecules or ions from a region of higher concentration to a region of lower concentration via a process that does not require cellular energy is called
Simple Diffusion
Q 1.2 Cell Lab Quiz
1. Assume the left beaker contains 3 mM NaCl, 8 mM glucose, and 9 mM albumin. The right beaker contains 9 mM NaCl, 9 mM glucose, and 39 mM albumin. Furthermore, the dialysis membrane is permeable to all substances except albumin. Which way will albumin move?
Not Move
2. Referring to the Filtration results, what amount of powdered charcoal (mg/ml) was found in the filtrate when the 50 MWCO membrane was used?
0.00
3. Passive transport processes require less ATP than active transport processes.
False
4. If you consider the solute concentration gradient during osmosis, which way will net water movement be?
Movement From High To Low Concentration
5. As the number of membrane transport proteins increases, the rate of facilitated diffusion
Increases
6. Assume the left beaker contains 3 mM NaCl, 8 mM glucose, and 9 mM albumin. The right beaker contains 9 mM NaCl, 9 mM glucose, and 39 mM albumin. Furthermore, the dialysis membrane is permeable to all substances except albumin. Which way will glucose move?
To The Left Beaker
7. Which process does not belong with the others?
Simple Diffusion
8. If the pressure gradient is great enough, any size solute can be filtered through a membrane without harming the membrane
False
9. Which of the following is not a passive transport process?
None Of The Above
10. Which of the following expresses the concentration of a solution?
20mM