plumiBrain imaging: MRI, fMRI, PET and CT: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 8.5.2 Brain imaging: MRI, fMRI, PET and CT, 2019–2025, with mark schemes and examiner’s reports where available.
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Q8(c)
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All 15 questions on Brain imaging: MRI, fMRI, PET and CT, as a list
- October 2024, Unit 5, Q8(c) (2 marks): Describe the information that would be obtained from using a combined MRI and PET scan of the brain (Paragraph 13). (2)
- June 2024, Unit 5, Q1(a)(ii) (2 marks): Damage to anterior cruciate ligaments can be detected using magnetic resonance imaging (MRI). Describe how MRI can show damage to the anterior cruciate ligament
- June 2024, Unit 5, Q5(b)(ii) (3 marks): The diagnosis of ALS is made using positron emission tomography (PET) scans and computed tomography (CT) scans of the brain and nervous tissue. Compare and cont
- January 2024, Unit 5, Q8(f) (2 marks): Aerobic exercise may increase muscle size (hypertrophy) in older individuals. Describe how computed tomography (CT) scans can be used to measure these increases
- October 2023, Unit 5, Q3(a)(i) (2 marks): Lesion A is spherical and has a diameter (S–T) of 1.97 cm. Calculate the volume of lesion A. Use the formula: 4 3 V r 3 Give your answer to 2 decimal places. (2
- October 2023, Unit 5, Q3(a)(ii) (2 marks): Calculate the actual width of the lesion labelled B between points X and Y. Give your answer to 2 significant figures. (2) Answer cm
- October 2023, Unit 5, Q3(b) (1 mark): An MRI scan can be used to diagnose a brain tumour. Suggest why a dye might be given during the MRI scan. (1)
- June 2023, Unit 5, Q8(d) (2 marks): Describe how fMRI scans could be used to show the activity of the regions of the brain controlling memory and sensation when probiotics are consumed (paragraph
- January 2023, Unit 5, Q2(a) (1 mark): Which type of scan can be used to study changes in brain function as they happen? (1) A computed tomography (CT) B electrocardiogram (ECG) C functional magnetic
- January 2023, Unit 5, Q2(b) (3 marks): Describe the advantages and disadvantages of using positron emission tomography (PET) and magnetic resonance imaging (MRI) to investigate brain function. (3)
- January 2022, Unit 5, Q6(d) (4 marks): The positron emission tomography (PET) images show the brain of an individual before (control) and after taking the drug cocaine. (Source: © BROOKHAVEN NATIONAL
- October 2021, Unit 5, Q8(b) (4 marks): Some forms of dementia can be diagnosed using brain scans. Compare and contrast the use of functional magnetic resonance imaging (fMRI) and computed tomography
- January 2021, Unit 5, Q3(b)(i) (1 mark): Which one of the following statements is correct? (1) A CT scans are produced by the absorbance of magnetic fields B CT scans are produced by the absorbance of
- January 2021, Unit 5, Q3(b)(ii) (3 marks): During a seizure, part of the brain will be overactive. Describe how positron emission tomography (PET) could be used to identify the part of the brain involved
- October 2020, Unit 5, Q8(c) (2 marks): Explain why a CT scan was used to show that Judy Perkins was free of tumours (paragraph 10 and Figure 1). (2)
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