Question

Why the food can be kept for a longer time in cold house than in normal conditions?

• A. Insect can not enter
• B. Bacterial multiplication stops
• C. Bacterial multiplication is reduced
• D. There is plasmolysis at low temperature

Answer 1

The correct option is C Bacterial multiplication is reduced

Temperature is one of the important factor which keeps bacteria under control. In food, bacteria may multiply if it is stored at the wrong temperature. Usually, bacteria grow and multiply at between 5${}^o$C and 60${}^o$C. Above 60${}^o$C, bacteria are killed whereas below 5${}^o$C, bacterial multiplication is reduced. At the cold temperature, bacteria enter a dormant stage because the activity of bacterial enzymes is reduced at low temperature.

Thus, the correct answer is option C.