Which of these processes is responsible for the recorded production of CO2 by yeast cells from sugar solution?

Rationale

Anaerobic respiration is responsible for the recorded production of CO2 by yeast cells from a sugar solution.

Yeast metabolizes sugar in an environment lacking oxygen through a process known as anaerobic respiration or fermentation. This process produces carbon dioxide (CO2) and ethanol as by-products, which is why yeast is commonly used in the baking and brewing industries.

A (Capillary action) YOUR ANSWER

Capillary action is a physical process where liquid moves up a narrow tube against the force of gravity. It is a result of the intermolecular forces between the liquid and the tube's material. This process is unrelated to metabolic activities in yeast cells, and thus, it does not result in the production of CO2.

B (Translocation) YOUR ANSWER

Translocation is a biological process in plants where nutrients are transported from leaves (where they are produced via photosynthesis) to other parts of the plant. This process is not applicable to yeast cells and does not result in the production of CO2.

C (Photosynthesis) YOUR ANSWER

Photosynthesis is a process used by plants, algae, and some bacteria to convert light energy, usually from the sun, into chemical energy in the form of glucose. Carbon dioxide is used in this process, not produced by it. Yeast cells, being fungi, do not perform photosynthesis.

D (Anaerobic respiration) CORRECT

Anaerobic respiration is a process by which cells, like yeast, convert sugars into energy in the absence of oxygen. This process results in the production of CO2 and ethanol. It is the correct answer because it is the process by which yeast metabolizes sugar to produce CO2.

Conclusion

The production of CO2 by yeast cells from a sugar solution is a result of anaerobic respiration. This process, which occurs in an oxygen-deprived environment, allows yeast to metabolize sugar and produce CO2 and ethanol as by-products. The other processes—capillary action, translocation, and photosynthesis—are not responsible for the production of CO2 in yeast cells.

Which of these processes is responsible for the recorded production of CO2 by yeast cells from sugar solution?

Anaerobic respiration is responsible for the recorded production of CO2 by yeast cells from a sugar solution.

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