Describe how water moves from the roots to the leaves in a plant.
33 marks
Explain how auxin causes a shoot to grow towards light.
44 marks
Explain how blood glucose concentration is controlled after a meal.
54 marks
Explain how the body responds when its core temperature rises.
64 marks
Explain why the human circulatory system is described as a double circulation.
73 marks
Compare aerobic and anaerobic respiration in muscles.
83 marks
Explain the role of bile in digestion.
93 marks
Explain why a decrease in the number of rabbits could affect the population of foxes and grass.
103 marks
A student placed 10 quadrats of 1 m² randomly in a field of area 1200 m² and counted 48 daisies in total. Estimate the number of daisies in the field.
114 marks
Describe the processes that cycle carbon between the atmosphere and living things.
126 marks
Explain how human activities reduce biodiversity and describe ways to protect it.
134 marks
Describe four factors that threaten food security.
146 marks
Describe a method to investigate the effect of light intensity on the rate of photosynthesis in pondweed.
153 marks
In a potometer, the air bubble moved 3.6 cm in 12 minutes. The capillary tube has a radius of 0.5 mm. Calculate the rate of water uptake in mm³ per minute.
163 marks
Describe three uses of plant hormones in agriculture or horticulture.
171 mark
Which blood component helps blood to clot?
Finished?
Answer every question to finish (17 left), or finish when the time’s up.
Score 0 / 60 · 0 of 17 marked
This paper is written by Plasmo in the style of the Edexcel GCSE Combined Science exam. It is not a past paper and is not produced or endorsed by the exam board.