Directly related questions
- EXEX.1A.SL.TZ0.4: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.HL.TZ0.7: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.SL.TZ0.4: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.HL.TZ0.7: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.HL.TZ0.7: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.SL.TZ0.4: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.SL.TZ0.5: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.HL.TZ0.8: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.SL.TZ0.5: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.HL.TZ0.8: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.SL.TZ0.5: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.HL.TZ0.8: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
-
EXEX.2.HL.TZ0.i:
secretion of of surfactant.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
-
EXEX.2.SL.TZ0.i:
secretion of of surfactant.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.a:
Explain one reason gas exchange is more challenging in larger species of organisms.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
- EXEX.2.HL.TZ0.ii: dense network of capillaries.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
- EXEX.2.SL.TZ0.ii: dense network of capillaries.
-
22N.1A.HL.TZ0.32:
The apparatus is set up to measure the rate of transpiration. As transpiration occurs from the leafy shoot, water is drawn through the apparatus and is measured by timing the movement of the air bubble along the capillary tube.
Which variable(s) must be controlled if transpiration rates are compared in different plant species?
I. Total leaf surface area
II. Volume of water in the reservoir
III. Room temperature
A. I only
B. III only
C. I and III only
D. I, II and III
-
22N.1A.HL.TZ0.32:
The apparatus is set up to measure the rate of transpiration. As transpiration occurs from the leafy shoot, water is drawn through the apparatus and is measured by timing the movement of the air bubble along the capillary tube.
Which variable(s) must be controlled if transpiration rates are compared in different plant species?
I. Total leaf surface area
II. Volume of water in the reservoir
III. Room temperature
A. I only
B. III only
C. I and III only
D. I, II and III
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
Sub sections and their related questions
B3.1.1. Gas exchange as a vital function in all organisms
- EXEX.1A.HL.TZ0.7: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.SL.TZ0.4: For what reason do large organisms need specialized gas exchange structures? A. They have a...
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
- EXEX.1A.SL.TZ0.4: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.HL.TZ0.7: For what reason do large organisms need specialized gas exchange structures? A. They have a...
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
- EXEX.1A.HL.TZ0.7: For what reason do large organisms need specialized gas exchange structures? A. They have a...
- EXEX.1A.SL.TZ0.4: For what reason do large organisms need specialized gas exchange structures? A. They have a...
-
EXEX.2.HL.TZ0.4a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.HL.TZ0.a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.2a:
Explain one reason gas exchange is more challenging in larger species of organisms.
-
EXEX.2.SL.TZ0.a:
Explain one reason gas exchange is more challenging in larger species of organisms.
B3.1.2. Properties of gas-exchange surfaces
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
B3.1.3. Maintenance of concentration gradients at exchange surfaces in animals
NoneB3.1.4. Adaptations of mammalian lungs for gas exchange
- 19N.2.SL.TZ0.6c: Explain how ventilation and lung structure contribute to passive gas exchange.
-
21M.2.SL.TZ1.7b:
Explain the process of gas exchange taking place in the alveoli.
- 21M.1A.SL.TZ2.27: Which is an adaptation to increase rates of gas exchange in the lung? A. Small surface area B....
- 19M.2.SL.TZ1.4b: Explain how gases are exchanged between the air in the alveolus and the blood in the capillaries.
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
- 19N.2.SL.TZ0.6c: Explain how ventilation and lung structure contribute to passive gas exchange.
- 19N.2.SL.TZ0.c: Explain how ventilation and lung structure contribute to passive gas exchange.
-
21M.2.SL.TZ1.7b:
Explain the process of gas exchange taking place in the alveoli.
-
21M.2.SL.TZ1.b:
Explain the process of gas exchange taking place in the alveoli.
- 21M.1A.SL.TZ2.27: Which is an adaptation to increase rates of gas exchange in the lung? A. Small surface area B....
- 19M.2.SL.TZ1.4b: Explain how gases are exchanged between the air in the alveolus and the blood in the capillaries.
- 19M.2.SL.TZ1.b: Explain how gases are exchanged between the air in the alveolus and the blood in the capillaries.
- SPM.1A.SL.TZ0.17: What occurs at gas exchange surfaces in the lungs of mammals? I. Gases diffuse across a moist...
-
EXEX.2.HL.TZ0.4bi:
secretion of of surfactant.
- EXEX.2.HL.TZ0.4bii: dense network of capillaries.
-
EXEX.2.HL.TZ0.i:
secretion of of surfactant.
- EXEX.2.HL.TZ0.ii: dense network of capillaries.
-
EXEX.2.SL.TZ0.2bi:
secretion of of surfactant.
- EXEX.2.SL.TZ0.2bii: dense network of capillaries.
-
EXEX.2.SL.TZ0.i:
secretion of of surfactant.
- EXEX.2.SL.TZ0.ii: dense network of capillaries.
B3.1.5. Ventilation of the lungs
- 22M.1A.SL.TZ2.27: Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli...
- 21N.2.SL.TZ0.2c: Outline the action taken by the diaphragm during inhalation.
-
21M.2.SL.TZ1.7a:
Outline the process of inhalation.
- 21N.2.SL.TZ0.4c: Outline the action taken by the diaphragm during inhalation.
- 21N.1A.SL.TZ0.27: What occurs during inhalation?
- 19M.1B.SL.TZ2.3a: State one other variable that should have been controlled in this study.
- 19M.1B.SL.TZ2.3b: Compare and contrast the effect of increasing exercise intensity at sea level and at an altitude...
-
19M.1B.SL.TZ2.3c:
Outline how ventilation rate could have been monitored in this study.
- 19M.2.SL.TZ1.6a: Outline the process of inspiration in humans.
-
23M.2.SL.TZ1.8:
Explain how breathing is controlled by the brain.
- 23M.1A.SL.TZ2.19: What occurs during inspiration? A. Internal intercostal muscles contract, increasing the...
- 22M.1A.SL.TZ2.27: Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli...
- 22M.1A.SL.TZ2.27: Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli...
- 22M.1A.SL.TZ2.27: Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli...
- 22M.1A.SL.TZ2.27: Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli...
- 22M.1A.SL.TZ2.27: Pressure changes inside the thorax cause the movement of air in and out of the lung alveoli...
- 21N.2.SL.TZ0.2c: Outline the action taken by the diaphragm during inhalation.
- 21N.2.SL.TZ0.c: Outline the action taken by the diaphragm during inhalation.
-
21M.2.SL.TZ1.7a:
Outline the process of inhalation.
-
21M.2.SL.TZ1.a:
Outline the process of inhalation.
- 21N.2.SL.TZ0.4c: Outline the action taken by the diaphragm during inhalation.
- 21N.2.SL.TZ0.c: Outline the action taken by the diaphragm during inhalation.
- 21N.1A.SL.TZ0.27: What occurs during inhalation?
- 19M.1B.SL.TZ2.a: State one other variable that should have been controlled in this study.
- 19M.1B.SL.TZ2.b: Compare and contrast the effect of increasing exercise intensity at sea level and at an altitude...
-
19M.1B.SL.TZ2.c:
Outline how ventilation rate could have been monitored in this study.
- 19M.2.SL.TZ1.6a: Outline the process of inspiration in humans.
- 19M.2.SL.TZ1.a: Outline the process of inspiration in humans.
-
23M.2.SL.TZ1.8:
Explain how breathing is controlled by the brain.
- 23M.1A.SL.TZ2.19: What occurs during inspiration? A. Internal intercostal muscles contract, increasing the...
B3.1.6. Measurement of lung volumes
NoneB3.1.7. Adaptations for gas exchange in leaves
- 20N.1A.SL.TZ0.32: The graph shows the percentage of stomata that are open in two different species of plants over a...
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- 20N.1A.SL.TZ0.32: The graph shows the percentage of stomata that are open in two different species of plants over a...
- SPM.1A.HL.TZ0.26: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1A.SL.TZ0.18: What is always a consequence of the evaporation of water from mesophyll cells in leaves of a...
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
B3.1.8. Distribution of tissues in a leaf
-
21N.1A.SL.TZ1.32:
A plant is allowed to photosynthesize in an atmosphere containing radioactive 14C. Where in the plant stem would radioactive sugars be found?
[Source: sinhyu/123rf.com.]
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- EXEX.1A.HL.TZ0.8: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.SL.TZ0.5: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- EXEX.1A.SL.TZ0.5: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.HL.TZ0.8: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
-
21N.1A.SL.TZ1.32:
A plant is allowed to photosynthesize in an atmosphere containing radioactive 14C. Where in the plant stem would radioactive sugars be found?
[Source: sinhyu/123rf.com.]
- SPM.1B.SL.TZ0.2d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- SPM.1B.SL.TZ0.d: Identify one adaptation of the leaf for the absorption of light visible in this micrograph.
- EXEX.1A.HL.TZ0.8: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
- EXEX.1A.SL.TZ0.5: What can be seen in a plan diagram of a leaf? A. Spongy cells and surface of the upper...
B3.1.9. Transpiration as a consequence of gas exchange in a leaf
- 22M.1A.SL.TZ1.32: Which graph represents the effect of humidity on the transpiration rate in plants?
- 19M.1B.SL.TZ1.2a: State the function of the tap and reservoir.
- 19M.1B.SL.TZ1.2b: Describe how the apparatus could be used to demonstrate that the transpiration rate is affected...
- 19M.1B.SL.TZ1.2c: One criticism of the experiment is that it only measured the rate of transpiration indirectly....
- 19N.1B.SL.TZ0.2a.i: Describe the trend in the data.
- 19N.1B.SL.TZ0.2a.ii: Transpiration continued after the fifth leaf had been removed. Suggest what can be concluded.
- 19N.1B.SL.TZ0.2b: State the independent variable in this investigation.
- 19N.1B.SL.TZ0.2c: Explain how the results in the graph could have been obtained.
-
21M.1A.SL.TZ2.32:
The apparatus in the diagram was used to assess the effects of factors on transpiration rates.
[Source: Republished with permission of Springer-Verlag from Experimentelle Pflanzenphysiologie: Band 2, Peter Schopfer, 1st edition, 1st Jan 1989; permission conveyed through Copyright Clearance Center, Inc.]
Which factor would be a controlled variable in an experiment designed to assess the effects of temperature on transpiration rate?
A. The opening and closing of stomata
B. The intensity of light striking the plant
C. The height of the water in the reservoir
D. The evaporation of water from the leaves
-
22M.2.SL.TZ1.6b:
Describe how changes in weather conditions affect the transport and loss of water in plants.
-
22N.1A.HL.TZ0.32:
The apparatus is set up to measure the rate of transpiration. As transpiration occurs from the leafy shoot, water is drawn through the apparatus and is measured by timing the movement of the air bubble along the capillary tube.
Which variable(s) must be controlled if transpiration rates are compared in different plant species?
I. Total leaf surface area
II. Volume of water in the reservoir
III. Room temperature
A. I only
B. III only
C. I and III only
D. I, II and III
- 22M.1A.SL.TZ1.32: Which graph represents the effect of humidity on the transpiration rate in plants?
- 22M.1A.SL.TZ1.32: Which graph represents the effect of humidity on the transpiration rate in plants?
- 22M.1A.SL.TZ1.32: Which graph represents the effect of humidity on the transpiration rate in plants?
- 22M.1A.SL.TZ1.32: Which graph represents the effect of humidity on the transpiration rate in plants?
- 22M.1A.SL.TZ1.32: Which graph represents the effect of humidity on the transpiration rate in plants?
- 19M.1B.SL.TZ1.a: State the function of the tap and reservoir.
- 19M.1B.SL.TZ1.b: Describe how the apparatus could be used to demonstrate that the transpiration rate is affected...
- 19M.1B.SL.TZ1.c: One criticism of the experiment is that it only measured the rate of transpiration indirectly....
- 19N.1B.SL.TZ0.a.i: Describe the trend in the data.
- 19N.1B.SL.TZ0.a.ii: Transpiration continued after the fifth leaf had been removed. Suggest what can be concluded.
- 19N.1B.SL.TZ0.b: State the independent variable in this investigation.
- 19N.1B.SL.TZ0.c: Explain how the results in the graph could have been obtained.
-
21M.1A.SL.TZ2.32:
The apparatus in the diagram was used to assess the effects of factors on transpiration rates.
[Source: Republished with permission of Springer-Verlag from Experimentelle Pflanzenphysiologie: Band 2, Peter Schopfer, 1st edition, 1st Jan 1989; permission conveyed through Copyright Clearance Center, Inc.]
Which factor would be a controlled variable in an experiment designed to assess the effects of temperature on transpiration rate?
A. The opening and closing of stomata
B. The intensity of light striking the plant
C. The height of the water in the reservoir
D. The evaporation of water from the leaves
-
22M.2.SL.TZ1.6b:
Describe how changes in weather conditions affect the transport and loss of water in plants.
-
22M.2.SL.TZ1.b:
Describe how changes in weather conditions affect the transport and loss of water in plants.
-
22N.1A.HL.TZ0.32:
The apparatus is set up to measure the rate of transpiration. As transpiration occurs from the leafy shoot, water is drawn through the apparatus and is measured by timing the movement of the air bubble along the capillary tube.
Which variable(s) must be controlled if transpiration rates are compared in different plant species?
I. Total leaf surface area
II. Volume of water in the reservoir
III. Room temperature
A. I only
B. III only
C. I and III only
D. I, II and III
B3.1.10. Stomatal density
-
20N.1B.SL.TZ0.1a:
Calculate the magnification of the image, showing your working.
. . . . . . . . . . . . . . . . . . . . x
-
20N.1B.SL.TZ0.1b:
The mean stomatal density for the lower epidermis of P. decandrum was around 600 per mm2. Predict how the stomatal density for the upper epidermis would compare.
-
20N.1B.SL.TZ0.a:
Calculate the magnification of the image, showing your working.
. . . . . . . . . . . . . . . . . . . . x
-
20N.1B.SL.TZ0.b:
The mean stomatal density for the lower epidermis of P. decandrum was around 600 per mm2. Predict how the stomatal density for the upper epidermis would compare.
B3.1.11. Adaptations of foetal and adult haemoglobin for the transport of oxygen
-
19M.2.HL.TZ2.23:
Discuss the significance of the oxygen dissociation curves for adult hemoglobin and fetal hemoglobin.
-
19M.2.HL.TZ2.23:
Discuss the significance of the oxygen dissociation curves for adult hemoglobin and fetal hemoglobin.
B3.1.12. Bohr shift
-
20N.2.HL.TZ0.23a:
Using the graph, explain the Bohr shift.
- 23M.2.HL.TZ1.23a: State where in the body the blood would be flowing at point X on the graph.
-
20N.2.HL.TZ0.a:
Using the graph, explain the Bohr shift.
- 23M.2.HL.TZ1.a: State where in the body the blood would be flowing at point X on the graph.
B3.1.13. Oxygen dissociation curves as a means of representing the affinity of haemoglobin for oxygen at different oxygen concentrations
-
19M.2.HL.TZ2.23:
Discuss the significance of the oxygen dissociation curves for adult hemoglobin and fetal hemoglobin.
-
23M.2.HL.TZ1.23b:
Outline the reason that the curve for fetal hemoglobin is to the left of normal adult hemoglobin.
-
19M.2.HL.TZ2.23:
Discuss the significance of the oxygen dissociation curves for adult hemoglobin and fetal hemoglobin.
-
23M.2.HL.TZ1.b:
Outline the reason that the curve for fetal hemoglobin is to the left of normal adult hemoglobin.