Explain why an enzyme stops working at high temperatures.
From Biology Paper 1, Higher
63 marks
Explain the role of bile in digestion.
From Biology Paper 1, Higher
74 marks
Explain why the human circulatory system is described as a double circulation.
From Biology Paper 1, Higher
84 marks
Describe how water moves from the roots to the leaves in a plant.
From Biology Paper 1, Higher
124 marks
Explain how smoking increases the risk of cardiovascular disease and lung cancer.
From Biology Paper 1, Higher
193 marks
In an investigation, 2.4 cm³ of oxygen was collected in 40 s from hydrogen peroxide broken down by catalase. Calculate the mean rate of reaction in cm³/s and name one variable to control.
From Biology Paper 1, Higher
203 marks
Explain how villi are adapted for absorbing digested food.
Score 0 / 25 · 0 of 7 marked
This paper is written by Plasmo in the style of the AQA GCSE Combined Science exam. It is not a past paper and is not produced or endorsed by the exam board.