Question Constellation Sign up for free AQA · GCSE · Biology
Cell biology
05.1 · 6 marks Potato Osmosis Investigation Method Plan a method that could be used to obtain the results in Figure 4. 05.2 · 3 marks Potato Mass Loss by Osmosis Explain the result for the potato pieces in the 0.6 mol/dm³ salt concentration. 05.3 · 2 marks Concentration Gradient and Potato Mass Explain why the result for the potato pieces at 1.0 mol/dm³ was different from the result at 0.6 mol/dm³. 08.1 · 1 mark Cell Changes Before Division Describe one other change that occurs in a cell before the cell begins to divide. 08.2 · 1 mark Cell Division Diagram Structures Name structure Z in Figure 8. 08.3 · 6 marks Magnification from Cylinder Volume Calculate the magnification of structure Y in Figure 8. Use π = 3.14. 08.4 · 2 marks Fibre Attachment During Cell Division Explain why a cell cannot complete division when affected by drug X.
AQA · GCSE · Biology
Infection and response
06.1 · 1 mark Examples of Antibiotic Medicines Name one antibiotic. 06.2 · 2 marks Antibiotic Inhibition Zones A student said: ‘The bacterium is resistant to antibiotic C.’ Explain how the results in Figure 5 show that the student is not... 06.3 · 2 marks Consequences of Antibiotic Resistance Suggest why doctors are concerned about antibiotic resistance. 06.4 · 1 mark Viral Growth Requirements Suggest why viruses cannot be grown on agar. 06.5 · 1 mark Challenges in Developing Antiviral Drugs Why is it difficult for scientists to develop drugs to destroy viruses? 06.6 · 1 mark Viruses and White Blood Cells Which disease is caused by a virus that damages white blood cells? 08.6 · 1 mark Preclinical Drug Testing Methods What is involved in preclinical testing of drugs?
AQA · GCSE · Biology
Bioenergetics
07.1 · 5 marks Photosynthesis Leaf Test Results Explain the results for the three leaves. 07.2 · 1 mark Variegated Leaf Starch Results Complete Table 4 to show the results you would expect for the starch test on the leaf in Figure 6. 07.3 · 2 marks Chlorophyll and Starch Formation Explain the results you gave in Question 07.2. 07.4 · 1 mark Mineral Ions and Yellow Leaves Which ion is deficient in a plant with yellow leaves? 07.5 · 1 mark Yellowing from Ion Deficiency Give the scientific term that describes the yellow colour of the leaves. 07.6 · 1 mark Measuring Photosynthesis with Oxygen How could the oxygen produced during photosynthesis be used to measure the rate of photosynthesis? 07.7 · 1 mark Photosynthesis Limiting Factors At point A on Figure 7, light is a limiting factor. What is meant by a ‘limiting factor’? 07.8 · 4 marks Temperature and Carbon Dioxide Effects Explain the effect of increasing temperature and increasing carbon dioxide concentration on the rate of photosynthesis shown in... 07.9 · 1 mark Light Intensity and Distance Which of the following shows the inverse square law?
AQA · GCSE · Biology