Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 4 - No. 19)
A student is investigating the effect of temperature on diffusion. Which of the following variables should the student control?
The type of the diffusing molecule.
The concentration gradient.
The temperature of the solution.
The volume of the solution.
Explanation
The student should control the type of the diffusing molecule, the concentration gradient and the volume of the solution to make sure the experiment is valid. The temperature is an independent variable.
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