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Why use salt as a control in the yeast population growth with sugar substrates experiment?

April 26, 2017Biology CONTROL growth Mathematics population Salt sugar yeast

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Why use salt as a control in the yeast population growth with sugar substrates experiment?

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To ensure a comparison can be made, i.e to determine whether the presence of sugar has an effect on yeast population growth. If salt were added instead and there was no change, it could be concluded that the yeast fed on the sugar.