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2024 AQA GCSE COMBINED SCIENCE: TRILOGY
8464/B/2F Foundation Tier Biology Paper 2F
Verified Question Paper with Marking Scheme Combined.
June 2024
Materials
For this paper you must have:
- a ruler
- a scientific calculator.
Instructions
- Use black ink or black ball-point pen.
- Pencil should only be used for drawing.
- Fill in the boxes at the top of this page.
- Answer all questions in the spaces provided.
- If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s).
- Do all rough work in this book. Cross through any work you do not want to be marked.
- In all calculations, show clearly how you work out your answer.
Information
- The maximum mark for this paper is 70.
- The marks for questions are shown in brackets.
- You are expected to use a calculator where appropriate.
- You are reminded of the need for good English and clear presentation in your answers. For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL
Do not write outside the box 0 1 Cystic fibrosis is a genetic disorder. (^0 1). 1 Cystic fibrosis affects the movement of substances into and out of cells. Which part of a cell controls the movement of substances into and out of the cell? [1 mark] Tick ( ) one box. Cell membrane Cytoplasm Mitochondria Cystic fibrosis is caused by a recessive allele, b. (^0 1). 2 What name is given to the allele B? [1 mark] Tick ( ) one box. DNA Dominant Gene (^0 1). 3 Which term describes the genotype Bb? [1 mark] Tick ( ) one box. Chromosome Heterozygous Phenotype
Do not write outside the box Turn over ►
Do not write outside the box (^0 1). 6 An embryo can be tested to find out its genotype. What is the name of the testing process? [1 mark] Tick ( ) one box. Genetic engineering Screening Selective breeding (^0 1). 7 Inherited disorders can be caused by changes in DNA. What is the name of a change in DNA? [1 mark] Tick ( ) one box. Genome Helix Mutation (^0 1). 8 Inheritance is one cause of variation in a population. Environmental factors also cause variation in a population. Suggest one environmental cause of variation in a human population. Do not refer to inheritance or to changes in DNA in your answer. [1 mark] 10
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Do not write outside the box (^0 2). 3 The pancreas produces insulin. How is insulin transported from the pancreas to the rest of the body? [1 mark] (^0 2). 2 Cells in the pancreas detect blood glucose concentration. What type of cells detect blood glucose concentration? [1 mark] Tick (✓) one box. Coordinator cells Muscle cells Receptor cells
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Three people each ate similar meals. The blood glucose concentration of each person was recorded for 80 minutes after the meal. Figure 3 shows the results. Figure 3 Change = arbitrary units Do not write outside the box (^0 2). 6 What was the change in blood glucose concentration in person A from 0 minutes to 60 minutes? [1 mark]
Do not write outside the box 14
There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED Do not write outside the box
Do not write outside the Students investigated the effect of number of hours of sleep on reaction time.^ box The students used the reaction test card shown in Figure 4 on page 11. Figure 5 shows the method used. Figure 5 This is the method used.
- Record the number of hours of sleep student A had the night before the test.
- Student B holds the lower edge of the card level with the top of student A ’s thumb.
- Student A holds their thumb and forefinger slightly apart, with space for the card to drop.
- Student B drops the card.
- Student A catches the card as quickly as possible.
- Record the number shown at the top of student A ’s thumb.
- Repeat steps 1 to 6 with seven other students.
Question 3 continues on the next page Do not write outside the box Turn over ► (^0 3). 2 Draw one line from each type of variable to the example of that variable in the investigation. [3 marks]
Question 3 continues on the next page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED Do not write outside the box Turn over ►
Figure 6 shows the results for the seven other students. Figure 6 Mode = hours Do not write outside the box (^0 3). 4 Student A had 8 hours and 30 minutes of sleep and a reaction score of 3 Plot the result for student A on Figure 6. [1 mark] (^0 3). 5 The mean number of hours of sleep for all students was 7. What was the mode for the number of hours of sleep? [1 mark]
