NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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doubling
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generation time
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doubling generation
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the next generation
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Detailed explanation-1: -The rate of exponential growth of a bacterial culture is expressed as generation time, also the doubling time of the bacterial population. Generation time (G) is defined as the time (t) per generation (n = number of generations). Hence, G=t/n is the equation from which calculations of generation time (below) derive.
Detailed explanation-2: -So, 1 bacterium can multiply to 2 in 20 minutes, 4 in 40 minutes, and so on.
Detailed explanation-3: -Use the equation X 2 nX0, where X0 is the initial number of cells, n is the number of generations, and X is the number of cells after n generations.
Detailed explanation-4: -The parent cell splits to form two daughter cells with the help of binary fission. There is a distinct bacterial cell that divides after every 20 minutes via binary fission.