Question

Big holes in Swiss cheese are made by a:

• A. a machine
• B. a bacterium that produces methane gas
• C. a fungus that releases a lot of gases during its metabolic activities
• D. a bacterium producing a large amount of carbon dioxide

Answer 1

The correct option is D a bacterium producing a large amount of carbon dioxide

Production of Swiss cheese:

Swiss cheese is characterised by large holes. The production involves the fermentation by the following bacteria:-

• Lactic acid bacteria: The bacteria converts lactose into lactic acid.
• Propionibacterium shermanii: This bacteria converts lactic acid to propionic acid and carbon dioxide.

The carbon dioxide escapes the surface of the cheese forming the large holes.






Final answer: c. a bacterium producing a large amount of carbon dioxide