plumiHow can we prevent the spread of infection?: OCR GCSE Combined Science B questions
Every OCR GCSE Combined Science B exam question on B2.3 How can we prevent the spread of infection?, 2018–2025, with its mark scheme and examiner’s report.
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Calculations
Q1(c)(ii)
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Q3(b)
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Q6(d)(i)
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Q6(d)(ii)
The whole paper ↗Q6(d)(iii)
The whole paper ↗Q8(b)(iii)
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Q4(c)(iii)
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Q4(b)
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Q4(c)(i)
The whole paper ↗Q4(c)(ii)
The whole paper ↗Q4(c)(iii)
The whole paper ↗Q4(c)(iv)
The whole paper ↗Q4(c)(v)
The whole paper ↗Q4(b)
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Q4(c)
The whole paper ↗Q11(c)
The whole paper ↗Q1(c)
The whole paper ↗Q6(a)
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Q6(b)(ii)
The whole paper ↗Q6(c)
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All 37 questions on How can we prevent the spread of infection?, as a list
- June 2025, Biology Paper 1 Foundation, Q1(c)(ii) (1 mark): How is fungus spread between plants? Tick (✓) one box. By sexual intercourse In contaminated food Spores carried by the wind [1]
- June 2025, Biology Paper 5 Higher, Q3(b) (3 marks): Explain how a vaccination provides protection against an infection. [3]
- June 2024, Biology Paper 1 Foundation, Q6(d)(i) (1 mark): Some people in Southern Africa use anti-malarial paint to decorate their house. The anti-malarial paint contains a chemical that kills insects. Suggest why the
- June 2024, Biology Paper 1 Foundation, Q6(d)(ii) (2 marks): In 2019, the first ever malaria vaccine was produced. Statements A to D explain how vaccines work. They are not in the correct order. A Inactive pathogens from
- June 2024, Biology Paper 1 Foundation, Q6(d)(iii) (1 mark): Use the data to estimate how many people caught malaria (in every 100 000 people) in 2020. Assume a lot of people had the malaria vaccine in 2019. Put a ring ar
- June 2024, Biology Paper 1 Foundation, Q8(b)(iii) (1 mark): Suggest why the risk of becoming pregnant and the risk of catching a sexually transmitted disease are equal when using a condom. [1]
- June 2024, Biology Paper 5 Higher, Q4(c)(iii) (1 mark): The number of new infections with HIV has been decreasing since 1995. Suggest one reason why. [1]
- June 2023, Biology Paper 5 Higher, Q4(b) (3 marks): Table 4.1 shows the percentage of trees with ash dieback in four different populations of trees. Table 4.1 Percentage of trees Population with ash dieback (%) 1
- June 2023, Biology Paper 5 Higher, Q4(c)(i) (2 marks): Complete the bar chart of the data in Table 4.2. 0 February March April May June Month [2]
- June 2023, Biology Paper 5 Higher, Q4(c)(ii) (1 mark): Describe the trend in the data. [1]
- June 2023, Biology Paper 5 Higher, Q4(c)(iii) (1 mark): Suggest one way in which humans could have caused the trend in the data. [1]
- June 2023, Biology Paper 5 Higher, Q4(c)(iv) (1 mark): Ash dieback only causes disease in trees. Explain one way in which the trend in the data could negatively affect animals in the woodland. [1]
- June 2023, Biology Paper 5 Higher, Q4(c)(v) (1 mark): Scientists banned people and pets from entering the forest at the end of June. Suggest one other way in which scientists could try to control the ash dieback in
- June 2022, Biology Paper 1 Foundation, Q4(b) (1 mark): The flu vaccine contains a dead or inactive flu pathogen. Explain why it is important that the flu pathogen in the vaccine is dead or inactive. [1]
- June 2022, Biology Paper 1 Foundation, Q4(c) (4 marks): The statements explain how vaccination can help to protect against flu. The statements are not in the correct order. A Antibodies stick to the flu antigens, lab
- November 2021, Biology Paper 1 Foundation, Q11(c) (3 marks): A vaccine can help prevent the spread of measles. Not all parents have their children vaccinated. Parents may have ethical reasons or may need more information
- November 2021, Biology Paper 5 Higher, Q1(c) (3 marks): A vaccine can help prevent the spread of measles. Not all parents have their children vaccinated. Parents may have ethical reasons or may need more information
- June 2019, Biology Paper 1 Foundation, Q6(a) (2 marks): The poster in Fig. 6.1 teaches people how to prevent the flu virus spreading. Fig. 6.1 Draw lines to connect each part of the poster to why it is necessary. Par
- June 2019, Biology Paper 1 Foundation, Q6(b)(ii) (2 marks): Flu vaccines cannot be given to very young babies. Which two statements explain why vaccinating adults helps protect young babies from flu? Tick (✓) two boxes.
- June 2019, Biology Paper 1 Foundation, Q6(c) (3 marks): A new flu vaccine is made every year. The vaccines contain proteins from the surface of the flu virus. Fig. 6.2 shows the flu virus from 2018. Fig. 6.3 shows th
- June 2019, Biology Paper 1 Foundation, Q6(d)(i) (3 marks): Calculate the percentage of the population of Australia infected with flu in 2017. Give your answer to 1 decimal place. Percentage of population = % [3]
- June 2019, Biology Paper 1 Foundation, Q6(d)(ii) (2 marks): The same flu virus could affect the UK. The population of the UK is approximately 66 000 000. In Australia the death rate from flu was approximately 4 people in
- June 2019, Biology Paper 1 Foundation, Q6(f)(i) (1 mark): There was a flu epidemic in 2009. Use Fig. 6.5 to estimate the increase in pneumonia cases from 2008 to 2009. Increase = people per 100 000 [1]
- June 2019, Biology Paper 1 Foundation, Q6(f)(ii) (1 mark): There is a positive correlation between having flu and having pneumonia. Which graph, A, B, C or D, shows a positive correlation? A B Number of Number of people
- June 2019, Biology Paper 1 Foundation, Q6(f)(iii) (2 marks): Does a correlation between flu and pneumonia prove that having flu causes pneumonia? Explain your answer. [2]
- June 2019, Biology Paper 5 Higher, Q3(a)(ii) (3 marks): Coughing and sneezing can spread the virus that causes flu. Look at the poster in Fig. 3.1. Fig. 3.1 Explain how following the advice in the poster (Fig. 3.1) c
- June 2019, Biology Paper 5 Higher, Q3(b)(i) (2 marks): Calculate the probability of an individual person in Australia being infected in 2017. Probability = [2]
- June 2019, Biology Paper 5 Higher, Q3(b)(ii) (3 marks): The same flu virus could affect the UK. The population of the UK is approximately 66 000 000. Assume that the death rate in the UK would be the same as in Austr
- June 2019, Biology Paper 5 Higher, Q3(d)(i) (2 marks): Infants under the age of 6 months are too young to be vaccinated against flu. Doctors recommend that older children and adults are vaccinated. Explain how this
- June 2019, Biology Paper 5 Higher, Q3(d)(ii) (6 marks): Influenza (flu) is a common human infection. (ii)* Read the article about flu viruses and vaccination. Flu virus proteins change rapidly due to a high mutation
- June 2018, Biology Paper 1 Foundation, Q6(a)(ii) (2 marks): How is ash dieback spread from one tree to another? Tick (✓) two boxes. Carried by insects Contaminated soil Contaminated water Movement of contaminated plant m
- June 2018, Biology Paper 1 Foundation, Q6(b)(i) (2 marks): Complete the bar chart using the data in Table 6.1 and label the x-axis. 500 400 total number 300 of squares 200 100 0 [2]
- June 2018, Biology Paper 1 Foundation, Q6(b)(ii) (1 mark): Which year does not fit the trend in the data? Put a ring around the correct answer. 2012 2013 2014 2015 2016 [1] Table 6.2 shows data for the individual countr
- June 2018, Biology Paper 1 Foundation, Q6(b)(iii) (2 marks): Calculate the percentage of all squares in Wales with ash dieback. Give your answer to 1 decimal place. Percentage = % [2]
- June 2018, Biology Paper 1 Foundation, Q6(b)(iv) (2 marks): Use the data in Table 6.2 and your own knowledge to explain why scientists are concerned about ash dieback arriving in Great Britain. [2]
- June 2018, Biology Paper 5 Higher, Q4(b)(i) (3 marks): The scientists calculated that 50.6% of all squares in Wales had ash dieback. Calculate the total number of squares in Wales. Give your answer to 3 significant
- June 2018, Biology Paper 5 Higher, Q4(b)(ii) (3 marks): Table 4.1 shows that the spread of ash dieback was slower overall in Scotland than in England. Suggest some possible explanations for this. [3]
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