MEDICAL
RECTUM AND ANUS
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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: -Protozoa (pro-toe-ZO-uh) are one-celled organisms, like bacteria. But they are bigger than bacteria and contain a nucleus and other cell structures, making them more like plant and animal cells.
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