| Date | November 2020 | Marks available | 1 | Reference code | 20N.1.HL.TZ0.30 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 / no time zone |
| Command term | Question number | 30 | Adapted from | N/A |
Question
The diagram shows a section through a thylakoid. Electrons move from X to Y.
[Source: Courtesy Alyse Da Quynh.]
What do the letters X, Y and Z represent?
Markscheme
B
Examiners report
Syllabus sections
- 22M.1.HL.TZ1.31: Which products of the light-dependent reactions are used in the Calvin cycle? A. O2 and...
- 18M.1.HL.TZ2.15: What is reduced by Photosystem I ? A. ADP B. NADP C. NAD D. FAD
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17N.2.HL.TZ0.04b:
Describe the process of photolysis in photosynthesis.
- 20N.3.HL.TZ0.3c: Suggest one other factor that has to be kept constant in all the jars during the experiment.
- 21M.1.HL.TZ1.33: A summary diagram of photosynthesis is shown. Which molecule represents ATP?
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20N.3.HL.TZ0.3a:
State the name of the process which occurs in the chloroplasts of Chlorella, that uses CO2.
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21M.2.HL.TZ1.2c:
Outline how the compounds produced by chloroplasts are distributed throughout the plant.
- 18M.1.HL.TZ1.31: ATP is needed to change products of the carboxylation of ribulose bisphosphate into triose...
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16N.2.HL.TZ0.3a:
Identify the following processes as either anabolism or catabolism by placing a tick (√) in the correct box.
- 16N.1.HL.TZ0.31: The electron micrograph shows part of a plant cell. Where do the light-independent reactions...
- 17M.1.HL.TZ2.13: Which technological advance enabled Calvin to perform his lollipop experiment on the...
- 17N.1.HL.TZ0.30: Which process occurs during the light-dependent reaction of photosynthesis? A. ATP, CO2 and...
- 17M.1.SL.TZ1.1: Which structure found in eukaryotes has a single membrane? A. Nucleus B. Lysosome C....
- 17M.1.HL.TZ2.15: What is used to reduce NADP in the light-dependent reactions of photosynthesis? A....
- 18N.1.HL.TZ0.30: The diagram shows the structure of a chloroplast. Where is chlorophyll located?
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18M.2.HL.TZ1.7b:
Outline how plants make use of the different wavelengths of light.
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21N.1.HL.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.]
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20N.3.HL.TZ0.3b.ii:
Explain the scientific reasoning for your hypothesis.
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21M.2.HL.TZ2.6b:
Describe how the structure of the chloroplast is adapted to its function in photosynthesis.
- 18N.2.HL.TZ0.4e.ii: In some boreal species, Rubisco is down-regulated during the winter months. Describe the role...
- 17N.1.HL.TZ0.29: Which reaction does not cause a net release of energy? A. ADP combines with inorganic...
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21M.2.HL.TZ1.2b:
Compare and contrast mitochondria and chloroplasts in terms of the substrates they use and the products they produce.
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20N.3.HL.TZ0.3b.i:
The colours of the indicator in the jars ranged from yellow to purple after five hours.
Predict the distribution of indicator colours in jars 1 to 9.
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18M.2.HL.TZ1.5b:
Compare and contrast the location of ATP synthase and the movement of protons during aerobic cell respiration and photosynthesis.
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21M.1.HL.TZ2.31:
The Hill reaction occurs when isolated chloroplasts are exposed to sunlight in the presence of DCPIP. DCPIP replaces NADP as the final electron acceptor for the light-dependent reactions of photosynthesis. What are products of the Hill reaction?
A. H2O and ATP
B. ATP and CO2
C. O2 and ATP
D. C6H12O6 and O2
- 21M.1.HL.TZ1.32: Which process does not take place in the stroma of chloroplasts? A. Synthesis of...
- 19M.2.HL.TZ1.7a: Outline the roles of helicase and ligase in DNA replication.
- 19M.2.HL.TZ2.8c: Explain Calvin’s experiment and what was discovered about photosynthesis through his work.
- 16N.2.HL.TZ0.8a: Explain the processes by which light energy is converted into chemical energy.
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21M.2.HL.TZ2.6a:
Explain the role of hydrogen ions used in photosynthesis.
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21N.2.HL.TZ0.7c:
Explain how the light-independent reactions of photosynthesis rely on the light-dependent reactions.
- 18M.2.HL.TZ1.5c: Using the table, distinguish between the production of ATP, use of oxygen and release of CO2...
- 21N.1.HL.TZ1.31: The diagram shows some of the intermediate compounds produced during the Calvin cycle. At...
