Multiple choice

A researcher inoculated a bottle of fruit juice with yeast and left it open for few days. He observed that first C2H5OH + CO2 are produced and next CO2 + H2O are produced. Which of the following is correct inference of the process?

  1. The yeast uses alcohol for C and energy.

  2. The yeast utilizes glycolysis and then changes to fermentation.

  3. The yeast utilizes fermentation and then changes to respiration.

  4. None of the above is correct

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The yeast utilizes fermentation and then changes to respiration. Since, C2H5OH + CO2 are produced first, it means fermentation is the first process. Next, CO2 + H2O production indicates respiration.