In a water molecule, because oxygen is more electronegative than hydrogen, the shared electrons are more commonly
found around the ____ nucleus than the ____ nucleus.
a. oxygen; hydrogen
b. hydrogen; oxygen
c. hydrogen; other hydrogen
d. oxygen; nitrogen
e. nitrogen; oxygen
a
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The sensing of starvation that leads to sporulation in Bacillus subtilis is accomplished by a ________.
A. quorum regulatory effector B. small RNA C. response regulator D. sensor kinase
The organelle that can collect, package, modify, and transport molecules is called the:
A. plasma membrane. B. Golgi apparatus. C. mitochondria. D. vesicle.
You expect to find the lowest overall blood pressure in
A. humans. B. salmon. C. alligators. D. sparrows. E. ostrich.
Based on these LD50 values, which microbe is the most virulent? Assume each bacterium enters through the appropriate portal of entry.
A) E. coli O157-1000 cells B) Cryptosporidium-50 cells C) Shigella-10 cells D) Vibrio cholerae-108 cells