Which of the following is not a major element of a microbial cell?
A. Hydrogen
B. Carbon
C. Oxygen
D. Copper
E. Nitrogen
Answer: D
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A diagnosis of tuberculosis involves a/an ________.
A. tuberculin skin test B. sputum culture C. chest X ray D. acid-fast stain of sputum E. All of the choices are correct.
Calcium ion concentrations are tightly regulated because of the importance of calcium in biological functions
Calcium ion concentrations are ____ inside the cell than out.
a. slightly higher b. slightly lower c. the same d. much higher e. much lower
During cytotoxic T cell attack of a target cell, which one of the following is released to pierce the cell membrane of the foreign cell, which ultimately kills the target cell?
A) interferon B) eosinophil C) histamine D) perforin E) antibody
Which of the following correctly represents length of axons found in humans?
a. 0.1 to 1 mm b. 1 to 10 mm c. 1 mm to 10 cm d. 1 mm to 1 m e. over 1 m