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题目

解题步骤

1. Understand the question

   procedure you just read. label if it was variable during the was constant.
   molecule size (large starch molecules vs. small glucose molecules)
   material used as the membrane
   amount of substances used
   number of trials
   whether the molecules
   now label the variables: molecule size is the variable. the ability of the material to diffuse is the variable.
   done

2. Brief Explanations

   In a diffusion experiment, the independent variable is the factor intentionally changed. Here, molecule size (starch vs. glucose) is manipulated. The dependent variable is the outcome measured, which is how well the molecules diffuse. The other listed factors (membrane material, substance amount, trial number) are kept constant as controlled variables.

3. Final answer

   Now label the variables: Molecule size is the independent variable. The ability of the material to diffuse is the dependent variable.

答案

Question Analysis

OCR Text

procedure you just read. label if it was variable during the was constant.
molecule size (large starch molecules vs. small glucose molecules)
material used as the membrane
amount of substances used
number of trials
whether the molecules
now label the variables: molecule size is the variable. the ability of the material to diffuse is the variable.
done

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