A Fish That Has Been Salt-Cured Subsequently Develops a Reddish

question 75

Multiple Choice

A fish that has been salt-cured subsequently develops a reddish color. You suspect that the fish has been contaminated by the extreme halophile, Halobacterium. Which of these features of cells removed from the surface of the fish, if confirmed, would support your suspicion?
1) the presence of the same photosynthetic pigments found in cyanobacteria
2) cell walls that lack peptidoglycan
3) cells that are isotonic to conditions on the surface of the fish
4) cells containing bacteriorhodopsin
5) the presence of very large numbers of ion pumps in its plasma membrane

• A) 2 and 5
• B) 3 and 4
• C) 1, 4, and 5
• D) 3, 4, and 5
• E) 2, 3, 4, and 5

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Definitions:

Salaries

Payments made regularly by an employer to an employee, especially a professional or white-collar worker.

5-Number Summary

A statistical summary that provides five key data points: minimum, first quartile, median, third quartile, and maximum.

Smallest Observation

The minimum value recorded in a set of data.

First Quartile

The value below which 25% of the observations fall, marking the lower quarter of the data set.