PrepTest 154, Section 3, Question 14
For nearly a century after the discovery in(452 more words not shown)
The passage provides information that(11 more words not shown)
- AWhy did Colwell(13 more words not shown)
- BWhat other bacteria(14 more words not shown)
- CDoes ultraviolet light(15 more words not shown)
- DIs V. cholerae(6 more words not shown)
- EHow does Colwell(11 more words not shown)
Reading the passage
This asks which question the account helps us answer. We know why Colwell looked toward the ocean, how her test detects the bacteria, and how dormancy explains their persistence. We also know that the precise conditions that wake them remain uncertain. Check what information each choice actually requests; mentioning a familiar topic isn't enough.
Working the answers
- ACorrect
Colwell noticed that most historical outbreaks occurred along seacoasts. That pattern gave her a reason to suspect that seawater served as a reservoir. We're told the clue that prompted the hypothesis, not just the hypothesis itself.
- B
The final paragraph says some other bacteria can also become dormant, but doesn't identify them. Knowing that others exist doesn't tell us which ones they are.
- C
Ultraviolet light makes the test's signal visible. We aren't told whether it changes the bacteria's reproduction. Detecting an organism and affecting its growth are different questions.
- D
Eating crab is connected to human cases of cholera. That doesn't establish whether the bacteria harm the crab itself. A shellfish can be relevant to transmission without our being told what happens to its health.
- E
Temperature and salinity are suggested as possible influences on reactivation, but no plan for Colwell's next experiment is described. Identifying an unanswered question doesn't tell us how she intends to investigate it.
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