When a Bacterium Is Introduced to a New Environment with Plenty

question 23

Multiple Choice

When a bacterium is introduced to a new environment with plenty of nutritional resources,binary fission will allow for rapid growth of the population (2-4-8-16-32-64 ...etc.) .However,there is usually a slight lag before the rapid growth begins.What is the best explanation for this lag period?

• A)It takes time for bacterial cells to duplicate enough organelles to digest new media.
• B)It takes time to induce and amplify the production of the enzymes needed for binary fission.
• C)Binary fission becomes more and more efficient after each cell division.
• D)The new media contains compounds that turn on repressor proteins.
• E)Structural genes act more slowly than metabolic genes.

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