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
Osmoregulation by marine fish and saltwater mosquitoes.
Color-enhanced scanning electron micrograph of HIV virus (red) infecting T-helper cells (green).
Fish
The method of Land’s (1977) color-vision experiments. Subjects viewed Mondrians illuminated by ...
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The phenotypic distribution in a cross with two traits: seed color and seed shape. Plants in the F2