Question

question 3 of 6
what does the strong base, koh, do in this experiment?
absorbs the co2 the organism is producing
gives an oxygen source to the organism
absorbs excess fluid in the tube

Explanation:

Potassium hydroxide (KOH) is a strong - base. In many biological or chemical experiments involving respiration of organisms, KOH reacts with carbon - dioxide ($CO_2$) produced by the organism. The reaction is $2KOH + CO_2=K_2CO_3 + H_2O$. So it absorbs the $CO_2$ produced by the organism.

Answer:

Absorbs the CO2 the organism is producing