BIOLOGY IN HUMAN WELFARE
HUMAN HEALTH AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A S. mutans is a bacterium that causes cavities, and S. pneumonia is a bacterium that causes pneumonia.
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B Fungi evolved the ability to produce anti-bacterial chemicals as they competed with bacteria over millions of years.
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C The bacterium Streptococcus pyogenes causes strep throat and rheumatic heart disease.
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D Species of bacteria belonging to the genus Bacteroides help the human body digest food.
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Detailed explanation-1: -Among dominant beneficial bacteria are several species of Bacteroides, which metabolize polysaccharides and oligosaccharides, providing nutrition and vitamins to the host and other intestinal microbial residents.
Detailed explanation-2: -Microscopic creatures-including bacteria, fungi and viruses-can make you ill. But what you may not realize is that trillions of microbes are living in and on your body right now. Most don’t harm you at all. In fact, they help you digest food, protect against infection and even maintain your reproductive health.
Detailed explanation-3: -Gut Bacteroidetes generally produce butyrate, an end product of colonic fermentation which is thought to have antineoplastic properties and thus plays a role in maintaining a healthy gut (Kim and Milner, 2007).
Detailed explanation-4: -Bifidobacteria are considered beneficial bacteria, as they can help prevent intestinal inflammation and enhance gut health ( 14, 15 ).