Biology for IGCSE & O level - Respiration (Section 1 - No. 23)
What is the main purpose of the soda lime in the apparatus used to investigate the uptake of oxygen by respiring yeast?
To absorb the oxygen produced by the yeast.
To absorb the carbon dioxide produced by the yeast.
To provide oxygen to the yeast.
To measure the volume of the yeast suspension.
Explanation
Soda lime absorbs carbon dioxide, allowing the volume change in the apparatus to be related to oxygen consumption.
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