A student wanted to find out whether the uptake of chloride ions by plant root tissue needs energy released by respiration.
The student had pieces of root tissue, a chloride solution, a chemical that stops respiration, a water bath, and equipment for measuring the concentration of chloride ions in a solution.
Describe a method the student could use.
In your method you should:
Give one hazard in this investigation and one way of reducing the risk from it.
The student repeated the investigation three times and calculated a mean.
Explain why.
58 exam-style questions on AQA GCSE Biology 1.3 Transport in cells, covering 1.3.1 Diffusion, 1.3.2 Osmosis, and 1.3.3 Active transport. Each one has a worked solution and a mark scheme showing where the marks go.