10
QuizMultiple Choice

Unit Test — Unit test

Question 10 • TX-Biology A-CR

Clara wrote the following hypothesis for an experiment about acidophilic bacteria.Bacteria cells will stop dividing in a basic (alkaline) environment because of the high pH.Which statement is the best way to restate the hypothesis so that it is more specific?

Answer
A
Growing acidophilic bacteria in some environments will cause the cells to stop dividing because of pH.
B
If the pH of their environment is changed, acidophilic bacterial cell division will be affected.
C
If the environment of acidophilic bacterial cells becomes alkaline, the bacteria will stop dividing.
D
The more alkaline an environment, the less cell division will occur in bacteria.

Explanation

A more specific hypothesis states the exact condition and outcome being tested. Choice C says that if the acidophilic bacteria’s environment becomes alkaline, the bacteria will stop dividing, directly restating the predicted effect of high pH. Choice B is less specific because “affected” does not say what will happen to cell division.

AI-written and checked against the verified answer.

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