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?
A)cell walls that have peptidoglycan
B)cells that are hypotonic to conditions on the surface of the fish
C)cells able to survive salt concentrations lower than 9%
D)the presence of very large numbers of ion pumps in the plasma membrane

Question

Quizplus · Accepted Answer

Halobacterium is an extreme halophile, which means it thrives in environments with very high salt concentrations. To survive in such an environment, the cells must have an extensive system of ion pumps in the plasma membrane to maintain ion balance with their environment. Therefore, the presence of very large numbers of ion pumps in the cells removed from the surface of the fish would support the suspicion that the fish has been contaminated by Halobacterium. The other options are not specific to Halobacterium and do not support the suspicion.

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