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Does bacteria grow rapidly at low temperature and are bacterial toxins poisons?

true or false.. bacteria grows rapidly at low temperatures ??? true or false.. some types of bacteria have the ability to form sporns ??? true or false.. bacterial toxins are poisons produced by some bacteria and moulds ??? true or false.. people commonly harbour food poisoning bacteria in the nose , mouth, intestine , cuts and on the skin ???
Asked On : Tue, 19 Feb 2013
Answers:  2 Views:  212
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Psychiatrist 's  Response
Dec 2014
thanks for your question
Bacteria are present every where, even on our body surface, even in our body, in our ears, nose etc.
But the thing is there are good bacteria (beneficial or in better term commensals) or bad bacteria (harmful).
The different bacterial species tend to produce different diseases, different symptomatology for example a bacteria Staphylococcus aureus is involved in food poisoning, many chronic infections. Pneumococcus is involved in pneumonia. They have different temperature range to grow, and most of bacteria grow at ambient room temperature with high humidity. Extremes of temperature whether lower or upper is harmful to bacteria. Most of bacteria which cause food poisoning usually grow more in rainy season or in summers.
On the contrary commensels have many beneficial effects, they protect our body from infection by other bacteria. They help in digestion of food.
food poisoning bacteria are usually not harbored in nose mouth or on skin of normal person. They are usually transmitted from one infectious person to food and then from food to person and so on.
thanks hope i clarified your doubt to some extent
take care
Answered: Wed, 20 Feb 2013
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General & Family Physician Dr. Achuo Ascensius's  Response
Hello, thanks for using HCM.
Based on growth rate with respect to temperature, bacteria can be grouped into various classes; those that grow at very low temperature (psychrophilic), those that grow at moderate temperatures , ( mesophilic), those that grow at high temperatures (thermophilic) and those that grow at very high temperatures (Hyperthermophilic). Those that grow at low temperature will definitely grow fast at those tempperature and will become inhibited at higher temperatures. Examples include arthrobacter and psychrobacter.
Yes for sure bacterial and mould prduce toxins that are poisonous to other living organisms. Examples include Botulinum neurotoxins , tetanus toxin , Staphylococcus toxins, as well as other toxin involved in food poisoning etc. Penicillin which is used as an antibiotic is produced by a fungus. Stapphyloccocus has a nasal reservoir.
Best regards and hope this helps you.
Answered: Wed, 20 Feb 2013
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