what is bacteria:
member of a large group of unicellular microorganisms which have cell walls but lack organelles and an
organized nucleus, including some which can cause disease.
what dose bacteria need to survive:
Water -- Bacteria need water to dissolve the food they use for energy and growth. ... Energy sources such as sugars, starch, protein, fats and other compounds provide the nutrients. Oxygen -- Some bacteria require oxygen to grow (aerobes) while others can grow only in the absence of oxygen (anaerobes).
what dose bacteria do to you :
Infection with a pathogen does not necessarily lead to disease. Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. ... Pathogenic microbes challenge the immune system in many ways. Viruses make us sick by killing cells or disrupting cell function.
what dose cross contamination do :
the process by which bacteria or other microorganisms are unintentionally transferred from one substance or object to another, with harmful effect."cross-contamination between raw and cooked food is the cause of most infection"a
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