Why is bacillus subtilis able to grow after exposure to even 80 degrees Fahrenheit?

Answer 1

The simple answer is that Bacillus is capable of producing endospores. Endospores can withstand a wider variety of extreme conditions that would be harmful to other cells - such as radiation, abrasion, extremes of heat and cold, and lack of nutrients and water.

Answer 2

Bacillus subtilis is a thermophilic bacterium, meaning it can survive and grow at high temperatures. It has adapted mechanisms such as heat shock proteins and enzymes to withstand heat stress. This allows it to continue growth even at temperatures as high as 80 degrees Fahrenheit.