题目
题目

BIOL 271 Case Study 2 Quiz

单项选择题

If an experiment is set up to show transformation in bacteria, what must be present in the environment for it to be successful? 

选项
A.A pilus connecting two live bacterial cells.
B.A virus capable of infecting bacterial cells.
C.Resistance genes released into the environment by dead cells.
D.Antibiotics to induce resistance mutations.
E.A high concentration of nutrients to promote cell growth.
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标准答案
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思路分析
The question asks what must be present in the environment for a transformation experiment in bacteria to succeed. Transformation is the uptake of naked DNA from the environment by competent bacteria, leading to genetic change. Option 1: 'A pilus connecting two live bacterial cells.' This describes conjugation, not transformation. Conjugation requires a donor and a recipient with a pilus, but ......Login to view full explanation

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