1. A term of biologists performed an experiment to determine the effectiveness of a chemical to accelerate the growth of a specific bacterium. They introduce 40 bacterial colonies into a growth medium and exactly two hours later, the number of colonies has grown to 200. In fact, the number of colonies grows exponentially for the first five hours of the experiment. Calculate the number of colonies that were present five hours after the experiment began. (Use dP/dt = kP)

Comprehensive Medical Assisting: Administrative and Clinical Competencies (MindTap Course List)
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Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
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Chapter42: Basic Microbiology
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1. A term of biologists performed an experiment to determine the effectiveness of a chemical to accelerate
the growth of a specific bacterium. They introduce 40 bacterial colonies into a growth medium and exactly
two hours later, the number of colonies has grown to 200. In fact, the number of colonies grows exponentially
for the first five hours of the experiment. Calculate the number of colonies that were present five hours after
the experiment began. (Use dP/dt = kP)
2. The population of the earth was 3 billion in 1970 and was increasing at a rate of 2% per year. With this rate,
when will the population of the earth reach 50 billion? (Start with dP/dt = 0.02P)
Transcribed Image Text:1. A term of biologists performed an experiment to determine the effectiveness of a chemical to accelerate the growth of a specific bacterium. They introduce 40 bacterial colonies into a growth medium and exactly two hours later, the number of colonies has grown to 200. In fact, the number of colonies grows exponentially for the first five hours of the experiment. Calculate the number of colonies that were present five hours after the experiment began. (Use dP/dt = kP) 2. The population of the earth was 3 billion in 1970 and was increasing at a rate of 2% per year. With this rate, when will the population of the earth reach 50 billion? (Start with dP/dt = 0.02P)
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