NUTRITION
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Bacteria are very small single-celled organisms that lack a nucleus. Although bacterial cells are less complex than the cells that make up the human body, bacteria are very important to human health. Which statement best summarizes how bacteria affect human health.
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Bacteria cause disease in humans.
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Bacteria are beneficial to humans.
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Bacteria rarely affect human cells because they are so much smaller.
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Some bacteria are beneficial to humans and some are harmful.
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Explanation:
Detailed explanation-1: -Bacteria are single celled microbes that lack a nucleus. Archaea are like bacteria, but they have different structures and properties. This gives them the ability to live in extreme environmental conditions. Protozoa are unicellular microorganisms that have nuclei.
Detailed explanation-2: -The human body is inhabited by millions of tiny living organisms, which, all together, are called the human microbiota. Bacteria are microbes found on the skin, in the nose, mouth, and especially in the gut. We acquire these bacteria during birth and the first years of life, and they live with us throughout our lives.
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