Question

The image depicts various products produced by bacterial fermentation. Can you select the correct organism involved in the production of the various gases and organic compounds?

• A. 1. Escherichia 2.Saccharomyces 3.Propionibacterium 4.Lactobacillus 5.Clostridium
• B. 1.Saccharomyces 2.Clostridium 3.Propionibacterium 4.Lactobacillus 5.Escherichia
• C. 1.Propionibacterium 2.Lactobacillus 3.Saccharomyces 4.Clostridium 5.Escherichia
• D. 1.Propionibacterium 2,Lactobacillus 3.Escherichia Clostridium 5.Saccharomyces

Answer 1

The correct option is C 1.Propionibacterium 2.Lactobacillus 3.Saccharomyces 4.Clostridium 5.Escherichia

Pyruvate is the end product of glycolysis. In the presence of oxygen the cell will undergo Aerobic Respiration. Without a supply of oxygen, as in an anaerobic environment, a cell will instead turn to fermentation. Anaerobic fermentation is necessary if there is no oxygen available to process the sugar into carbon dioxide and water. The image below depicts various products produced by bacterial fermentation.


Propionibacterium synthesizes propionic acid and CO2. Lactobacillus makes lactic acid. Saccharomyces makes ethanol and CO2. Clostridium is responsible for acetone and isopropanol and finally Escherichia contributes to the production of acetic acid.