AQA GCSE Combined Science: Trilogy Biology Paper 1 (Higher), 2021
Every question from AQA GCSE Combined Science: Trilogy Biology Paper 1 (Higher), 2021: 6 questions, 70 marks, each with its mark scheme and topic.
- Question 1 13 marks
Answer a series of questions about photosynthesis and a required practical investigating how light intensity, changed by distance from a lamp, affects the rate of photosynthesis in pondweed.
Biology · Required Practicals · B4: Bioenergetics · Biology Required Practicals
- Question 2 6 marks
Describe how to test a food sample for protein, starch and sugar, including the positive colour changes for each test.
Biology · Required Practicals · B4: Bioenergetics · Biology Required Practicals
- Question 3 10 marks
Explain the effect of temperature on fermentation in yeast, including why oil is used, why the mixture is left before measuring gas, and interpreting gas-volume results at 2 °C and 35 °C.
Biology · B4: Bioenergetics
- Question 4 12 marks
Identify the pathogens responsible for gonorrhoea, malaria and measles, explain how sterile mosquitoes reduce malaria transmission, state the equipment needed to view a virus, calculate how many times longer a fungal spore is than a virus, and explain why tobacco mosaic virus causes slow plant growth.
Biology · B3: Infection and Response · B1: Cell Biology · B4: Bioenergetics
- Question 5 17 marks
Identify blood vessels and blood flow through the heart, evaluate statins versus stents for reducing heart attack risk, explain breathlessness after a heart attack, and explain the use and advantages of stem cells for repairing heart tissue.
Biology · B2: Organisation · B1: Cell Biology
- Question 6 12 marks
Describe and explain transport of water and dissolved sugars in plants, including xylem, phloem, translocation, and specialisation of sieve tube and companion cells.
Biology · B2: Organisation · B4: Bioenergetics