Biology question

i) Discuss the differences between the growth of bacteria in nature and that in artificial culture.

ii) Explain why salt and sugar have been used to preserve food.

1 Answer

  • ?
    Lv 7
    1 decade ago
    Favorite Answer

    1)In nature bacteria have to compete difference conditions such as sources of food , temperature , water , any presence of growth inhibitor ,......etc . Until the bacteria have good growth conditions they would multiply to form next generations . But in culture , they grow & breed in good conditions .

    2)This is because sugar & salt can absorb water even through cells of plants & animals . Most bacteria cannot survive whithout water .

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