Question

how does CO2 passes through liquid paraffin if o2 does not pass through it during experiment with glucose and yeast in anaerobic respiration​

Answer 1

as we have removed the oxygen by adding janus green their is no oxygen so only co2 passes into the liquid paraffin

Answer 2

Answer:

For the given question, we will use Yeast to give the solution.

Explanation:

Yeast is a single celled fungus that can respire aerobically when oxygen is available and anaerobically in the absence of oxygen.

Aerobic respiration in yeast:

Glucose + Oxygen ======> Carbon dioxide + Water

Anaerobic respiration in yeast:

Glucose ======> Ethanol and Carbon dioxide

Both forms of respiration produce carbon dioxide as a waste product so how could this be demonstrated experimentally

This is the simplest set up that could demonstrate this.  Lime water will go cloudy in the presence of carbon dioxide.  Glucose solution is needed to provide the reactant sugar for the yeast to respire.  The oil layer on the top is to prevent the diffusion of oxygen from the air into the Yeast in Glucose solution, this ensuring anaerobic respiration will occur.

Well assuming you keep the volume and concentration of lime water constant, the time taken for the limewater to go cloudy could be measured under differing conditions: the faster the time, the faster the rate of respiration.  The experimenter could investigate the effect of changing the temperature, the pH or the concentration of glucose solution used.  Make sure you understand how and why changing each of these factors might affect rates of respiration in yeast.

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