MEDICAL
RECTUM AND ANUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Humans cannot digest food without the aid of small single-celled organisms that live in our digestive tract. Which common name is associated with these single-celled organisms that help humans digest food?
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algae
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bacteria
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protozoa
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virus
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Explanation:
Detailed explanation-1: -Bacteria are tiny, single-celled organisms that get nutrients from their environments. Some bacteria are good for our bodies-they help keep the digestive system in working order and keep harmful bacteria from moving in.
Detailed explanation-2: -The main types of bacteria in the colon are obligate anaerobes, and the most abundant bacteria are members of the genus Bacteroides, anaerobic gram-positive cocci, such as Peptostreptococcus sp., Eubacterium sp., Lactobacillus sp., and Clostridium sp.
Detailed explanation-3: -Bacteria are classified into five groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes).
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