SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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At 1:00 pm, a person is infected with 1 bacteria. If the bacteria population doubles every hour, how many bacteria will be present at 8:00 pm?
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16
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32
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64
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128
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Explanation:
Detailed explanation-1: -If there are 1000 bacteria now, 1 hour ago there would have been 500 since the number of bacteria doubles every hour. 2 hours ago there would have been half of 500 bacteria, that is 250 bacteria.
Detailed explanation-2: -Hence, the relative rate of growth of the bacteria population is 103.97% .
Detailed explanation-3: -Why it matters: Bacteria are among the fastest reproducing organisms in the world, doubling every 4 to 20 minutes. Some fast-growing bacteria such as pathogenic strains of E.
Detailed explanation-4: -If a bacteria population starts with 100 bacteria and doubles every three hours, then the number of bacteria after t hours is ƒ (t) = 100 • 2t/³.
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