why is yeast used in the experiment of respiration?

Yeast is commonly used in experiments on respiration because it is a living organism that can carry out cellular respiration. Cellular respiration is the process by which organisms break down sugar molecules to produce energy in the form of ATP.

Yeast is particularly useful in respiration experiments because it is a single-celled organism and can easily be cultured in the laboratory. It is also a facultative anaerobe, which means it can carry out respiration both in the presence and absence of oxygen.

To perform the experiment, yeast is typically mixed with a sugar solution, such as glucose. The yeast uses the sugar as a source of energy and undergoes the process of respiration. This results in the production of carbon dioxide gas and alcohol (ethanol) as byproducts.

By measuring the rate of carbon dioxide production or monitoring the release of gas bubbles, scientists can gain insights into the rate of respiration occurring in the yeast cells. This can help in understanding the factors that affect respiration, such as temperature, pH, or the presence of inhibitors or activators.

In summary, yeast is used in respiration experiments because it is a living organism capable of carrying out cellular respiration, making it a convenient and reliable model organism for studying this process.