Directly related questions
- 22N.1A.HL.TZ0.24: Atropine drops are used by opticians to dilate the pupil, so that a thorough examination of the...
- 22N.1A.HL.TZ0.24: Atropine drops are used by opticians to dilate the pupil, so that a thorough examination of the...
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
Sub sections and their related questions
B2.1.1. Lipid bilayers as the basis of cell membranes
NoneB2.1.2. Lipid bilayers as barriers
NoneB2.1.3. Simple diffusion across membranes
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
22M.2.SL.TZ2.a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
B2.1.4. Integral and peripheral proteins in membranes
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 19M.2.SL.TZ1.7b: Describe the functions of proteins in cell membranes.
- 23M.1A.SL.TZ2.3: The diagram shows protein channels involved in the passive movement of a substance into the...
- 23M.1A.SL.TZ2.4: The diagram shows protein channels involved in the passive movement of a substance into the...
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
22M.2.SL.TZ2.a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 19M.2.SL.TZ1.7b: Describe the functions of proteins in cell membranes.
- 19M.2.SL.TZ1.b: Describe the functions of proteins in cell membranes.
- 23M.1A.SL.TZ2.3: The diagram shows protein channels involved in the passive movement of a substance into the...
- 23M.1A.SL.TZ2.4: The diagram shows protein channels involved in the passive movement of a substance into the...
B2.1.5. Movement of water molecules across membranes by osmosis and the role of aquaporins
-
19M.1A.SL.TZ1.4:
Which process(es) occur(s) by osmosis?
I. Uptake of water by cells in the wall of the intestine
II. Loss of water from a plant cell in a hypertonic environment
III. Evaporation of water from sweat on the skin surface
A. I only
B. I and II only
C. II and III only
D. I, II and III
- 19M.2.SL.TZ2.6a: Outline four types of membrane transport, including their use of energy.
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
-
19M.1A.SL.TZ1.4:
Which process(es) occur(s) by osmosis?
I. Uptake of water by cells in the wall of the intestine
II. Loss of water from a plant cell in a hypertonic environment
III. Evaporation of water from sweat on the skin surface
A. I only
B. I and II only
C. II and III only
D. I, II and III
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
22M.2.SL.TZ2.a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
- SPM.1A.HL.TZ0.27: The diagram shows where the exchange of substances between blood and tissue fluid occurs in a...
B2.1.6. Channel proteins for facilitated diffusion
- 19M.2.SL.TZ2.6a: Outline four types of membrane transport, including their use of energy.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 22M.1A.SL.TZ1.3: What is/are required for facilitated diffusion? I. A concentration gradient II. ATP III. A...
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 21N.1A.SL.TZ0.3: How is facilitated diffusion in axons similar to active transport? A. They both require the...
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
22M.2.SL.TZ2.a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 22M.1A.SL.TZ1.3: What is/are required for facilitated diffusion? I. A concentration gradient II. ATP III. A...
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
- 21N.1A.SL.TZ0.3: How is facilitated diffusion in axons similar to active transport? A. They both require the...
B2.1.7. Pump proteins for active transport
- 19M.2.SL.TZ2.6a: Outline four types of membrane transport, including their use of energy.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
22M.2.SL.TZ2.a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
B2.1.8. Selectivity in membrane permeability
- 21M.1A.SL.TZ2.4: Which graph best represents the relationship between the concentration of chloride ions in the...
- 19M.2.SL.TZ2.6a: Outline four types of membrane transport, including their use of energy.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 22M.1A.SL.TZ1.3: What is/are required for facilitated diffusion? I. A concentration gradient II. ATP III. A...
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 21M.1A.SL.TZ2.4: Which graph best represents the relationship between the concentration of chloride ions in the...
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
-
20N.1A.SL.TZ0.4:
The diagram shows a section through a membrane. What are the modes of transport in the diagram?
[Source: © International Baccalaureate Organization 2020.]
-
22M.2.SL.TZ2.8a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
-
22M.2.SL.TZ2.a:
Outline four different processes, with examples, that allow substances to pass through the plasma membrane.
- 22M.1A.SL.TZ1.3: What is/are required for facilitated diffusion? I. A concentration gradient II. ATP III. A...
- 19M.2.SL.TZ2.5a: Outline four types of membrane transport, including their use of energy.
- 19M.2.SL.TZ2.a: Outline four types of membrane transport, including their use of energy.
B2.1.9. Structure and function of glycoproteins and glycolipids
NoneB2.1.10. Fluid mosaic model of membrane structure
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
-
19M.1B.SL.TZ2.1b.i:
Label the model A diagram to show a region of protein.
- 19M.1B.SL.TZ2.1c.i: Deduce one conclusion about the structure of the plasma membrane reached by the scientists from...
- 19M.1B.SL.TZ2.1c.ii: Suggest one reason for maintaining a pH of 7.5 throughout the experiment.
- 19M.1B.SL.TZ2.1d: State one technological improvement, other than enzymatic digestion, that led to the...
- 20N.2.SL.TZ0.2a.ii: State the role of cholesterol in animal cell membranes.
- 19M.2.SL.TZ1.5c: Explain how hydrophobic and hydrophilic properties contribute to the arrangement of molecules in...
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
-
19M.1B.SL.TZ2.b.i:
Label the model A diagram to show a region of protein.
- 19M.1B.SL.TZ2.c.i: Deduce one conclusion about the structure of the plasma membrane reached by the scientists from...
- 19M.1B.SL.TZ2.c.ii: Suggest one reason for maintaining a pH of 7.5 throughout the experiment.
- 19M.1B.SL.TZ2.d: State one technological improvement, other than enzymatic digestion, that led to the...
- 20N.2.SL.TZ0.2a.ii: State the role of cholesterol in animal cell membranes.
- 20N.2.SL.TZ0.a.ii: State the role of cholesterol in animal cell membranes.
- 19M.2.SL.TZ1.5c: Explain how hydrophobic and hydrophilic properties contribute to the arrangement of molecules in...
- 19M.2.SL.TZ1.c: Explain how hydrophobic and hydrophilic properties contribute to the arrangement of molecules in...
B2.1.11. Relationships between fatty acid composition of lipid bilayers and their fluidity
NoneB2.1.12. Cholesterol and membrane fluidity in animal cells
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ1.2: More than 90 % of cellular cholesterol is located in the cell’s plasma membrane. What is the main...
- 21M.1A.HL.TZ1.6: Which statement applies to cholesterol? A. It is hydrophobic and found on the outside of the...
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ2.3: Which plasma membrane is the least fluid at high temperatures?
- 22M.1A.HL.TZ1.2: More than 90 % of cellular cholesterol is located in the cell’s plasma membrane. What is the main...
- 21M.1A.HL.TZ1.6: Which statement applies to cholesterol? A. It is hydrophobic and found on the outside of the...
B2.1.13. Membrane fluidity and the fusion and formation of vesicles
- 21M.2.HL.TZ2.2a.ii: On the diagrams, label with a letter E a vesicle involved in exocytosis.
- 21M.2.HL.TZ2.2a.ii: On the diagrams, label with a letter E a vesicle involved in exocytosis.
- 21M.2.HL.TZ2.a.ii: On the diagrams, label with a letter E a vesicle involved in exocytosis.
B2.1.14. Gated ion channels in neurons
- 22N.1A.HL.TZ0.24: Atropine drops are used by opticians to dilate the pupil, so that a thorough examination of the...
-
23M.2.HL.TZ1.2a:
Draw one phospholipid molecule on the diagram to show a possible position in the membrane.
- 22N.1A.HL.TZ0.24: Atropine drops are used by opticians to dilate the pupil, so that a thorough examination of the...
-
23M.2.HL.TZ1.2a:
Draw one phospholipid molecule on the diagram to show a possible position in the membrane.
-
23M.2.HL.TZ1.a:
Draw one phospholipid molecule on the diagram to show a possible position in the membrane.
B2.1.15. Sodium–potassium pumps as an example of exchange transporters
-
19M.1A.HL.TZ2.5:
The table shows concentrations of potassium ions and sodium ions inside and outside human cells.
[Source: © International Baccalaureate Organization 2019]
What explains these concentrations?
A. Potassium ions diffuse in and sodium ions diffuse out.
B. Sodium ions diffuse in and potassium ions diffuse out.
C. Active transport pumps sodium ions in and potassium ions out.
D. Active transport pumps sodium ions out and potassium ions in.
- 19N.1A.HL.TZ0.2: By which process do potassium ions move through potassium channels in axons? A. Active...
- 21M.2.HL.TZ1.4b: Outline the role of the sodium–potassium pump in maintaining the resting potential.
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...
-
19M.1A.HL.TZ2.5:
The table shows concentrations of potassium ions and sodium ions inside and outside human cells.
[Source: © International Baccalaureate Organization 2019]
What explains these concentrations?
A. Potassium ions diffuse in and sodium ions diffuse out.
B. Sodium ions diffuse in and potassium ions diffuse out.
C. Active transport pumps sodium ions in and potassium ions out.
D. Active transport pumps sodium ions out and potassium ions in.
- 19N.1A.HL.TZ0.2: By which process do potassium ions move through potassium channels in axons? A. Active...
- 21M.2.HL.TZ1.4b: Outline the role of the sodium–potassium pump in maintaining the resting potential.
- 21M.2.HL.TZ1.b: Outline the role of the sodium–potassium pump in maintaining the resting potential.
- SPM.1A.HL.TZ0.15: The diagram shows the movement of ions that can occur across the membrane of a neuron. From the...