AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1H Biology Paper 1H Version: 1.0 Final *JUN238464B1H01* IB/M/Jun23/E5 8464/B/1HQUESTION PAPER & MARKING SCHEME/ [MERGED] Marl( scheme June 2023

GCSE COMBINED SCIENCE: TRILOGY 8464/B/1H Biology Paper 1H Version: 1.0 Final *JUN238464B1H01* IB/M/Jun23/E5 8464/B/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL Tuesday 16 May 2023 Morning Time allowed: 1 hour 15 minutes 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. Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. GCSE COMBINED SCIENCE: TRILOGY Higher Tier Biology Paper 1H H 2 *02* IB/M/Jun23/8464/B/1H 0 1 Communicable and non-communicable diseases are major causes of ill health. 0 1 . 1 Which disease is a non-communicable disease? [1 mark] Tick () one box. AIDS Cancer Gonorrhoea Malaria Obesity is a risk factor for many non-communicable diseases. 0 1 . 2 Give one non-communicable disease that obesity is a risk factor for. Do not refer to the diseases given in Question 01.1 in your answer. [1 mark] 0 1 . 3 National policies are used to help people who are obese to lose weight. One national policy is to reduce the amount of sugar added to food and drinks. Suggest one other national policy that could help people to lose weight. [1 mark] Do not write outside the box 3 *03* Turn over ► IB/M/Jun23/8464/B/1H Do not write outside the 0 1 box . 4 Body mass index (BMI) is one measure of obesity. BMI is calculated using the equation: BMI = body mass in kg (height in m)2 Table 1 shows how BMI is used to describe an adult’s BMI category. Table 1 BMI BMI category <18.5 Underweight 18.5 to 24.9 Healthy weight 25.0 to 29.9 Overweight >29.9 Obese A person is 1.64 m tall and has a mass of 69 kg. Determine the BMI category for this person. Use the BMI equation and Table 1. [3 marks] The person’s BMI category is Question 1 continues on the next page 4 *04* IB/M/Jun23/8464/B/1H Do not write outside the Scientists investigated the effect of smoking and of BMI on the birth mass of babies. box Women’s BMI categories were determined before the women became pregnant. 0 1 . 5 Suggest why BMI categories were determined before the women became pregnant. [1 mark] Figure 1 shows the results. Figure 1 5 *05* Turn over ► IB/M/Jun23/8464/B/1H Do not write outside the 0 1 box . 6 Give two conclusions that can be made from Figure 1. [2 marks] 1 2 0 1 . 7 Measles is a communicable disease. A virus causes measles. Describe how the measles virus is transferred from person to person. [2 marks] Question 1 continues on the next page 6 *06* IB/M/Jun23/8464/B/1H Do not write outside the box 14 Athlete’s foot is a communicable disease. A fungus causes athlete’s foot. The athlete’s foot fungus infects the skin on feet. 0 1 . 8 Scientists estimate that 17% of the UK population have athlete’s foot. The estimated UK population is Calculate how many people are estimated to have athlete’s foot. [2 marks] Estimated number of people with athlete’s foot = 0 1 . 9 Athlete’s foot fungus grows in moist conditions. Suggest one way a person could reduce their chance of catching athlete’s foot. [1 mark] 7 *07* Turn over ► IB/M/Jun23/8464/B/1H Do not write outside the Turn over for the next question box DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED 8 *08* IB/M/Jun23/8464/B/1H Do not write outside the 0 2 box Figure 2 shows onion cells viewed using a light microscope. Figure 2 Figure 3 shows the apparatus given to a student. Figure 3 9 *09* Turn over ► IB/M/Jun23/8464/B/1H Do not write outside the box 6 Describe how the student could use the apparatus to estimate the mean length of onion cells on the slide. [6 marks] Turn over for the next question 10 *10* IB/M/Jun23/8464/B/1H Do not write outside the 0 3 box The circulatory system includes the heart, blood vessels and blood. 0 3 . 1 The heart pumps the blood in a double circulatory system. Describe what is meant by a ‘double circulatory system’. [2 marks] 0 3 . 2 Heart rate is controlled by a group of cells th