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Answer to Question #90467 in Cell Biology for Ahmad

Question #90467
The low pH in the human stomach killsmost, but not all ingested bacteria, How does the human dgesive system prevent the surviving, pathogenic bacteria from causing infection?

Choices are:
Vomiting and diarrhea expose the pathogens to lymph nodes near the large intestine, esophagus, and mouth

Specialized cells in the digestive system signal white blood cells that a microbe has invaded

Ulceration of the digestive tract prevents pathogenic microbes from travelling elsewhere in the body


Non-pathogenic bacteria in the intestine kill invading bacteria and fungi
Expert's answer

Non-pathogenic bacteria in the intestine kill invading bacteria and fungi.

 

The harmless bacteria that survives in the gut is known as gut microbiome which helps in prevention for invasion of bacteria and fungi by developing our immune system and leads to the prevention of infection causing from bacteria. 

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