EVERYDAY SCIENCE

Detailed explanation-1: -It plays a fundamental role in human digestion by breaking down sugar polymers to simple glucose. Human cells do the same thing, but, until recently, no one expected gut bacteria to have such a large repertoire of enzymes that break down complex sugars.

Detailed explanation-2: -At room temperature, if the food is left out for any more than two hours, bacterial growth will be abrupt. All types of bacteria won’t give food poisoning. Freezing does not kill bacteria but only their growth stops. Some bacteria can withstand air like in food gravy and sauces.

Detailed explanation-3: -So, the correct answer is ‘Bacteria grow fastest when they are warm’

Detailed explanation-4: -Bacteria are small single-celled organisms. Bacteria are found almost everywhere on Earth and are vital to the planet’s ecosystems. Some species can live under extreme conditions of temperature and pressure. The human body is full of bacteria, and in fact is estimated to contain more bacterial cells than human cells.