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

question 54

Multiple Choice

A fish that had 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) its cells contain 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:

Compact Bone

The dense, hard outer layer of bone that provides strength and support and contains passageways for blood vessels and nerves.

Red Bone Marrow

A type of bone marrow that produces red blood cells, white blood cells, and platelets.

Blood Forming Cells

Cells found primarily in the bone marrow that give rise to all the blood cells including red blood cells, white blood cells, and platelets.

Upper Limbs

Refers to the part of the body that includes the arm, forearm, wrist, and hand.