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5 / 6  Which of the following is NOT a way the normal microbiota of the intestine helps to prevent infection?
A  It produces acids that lower the pH of the stomach.
B  It speeds up the process by which microbes are flushed from the digestive tract.
C  It consumes food and occupies space, outcompeting potential pathogens.
D  It generates large quantities of oxygen that kill anaerobic pathogens.
Practice MCQ 2

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Source:  OpenStax, Microbiology. OpenStax CNX. Nov 01, 2016 Download for free at http://cnx.org/content/col12087/1.4
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