Which of the following statements concerning the hepatitis B vaccine is FALSE?
A. It must be given in three doses.
B. It is protective against the virus in 95% of vaccinated individuals.
C. It is recommended for high-risk groups.
D. It must be repeated every five years.
E. Immunity can last at least 20 years and may be for life.
Answer: D
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If the fluid inside of a cell has a 5% solute concentration, what would happen if the cell was placed in a solution with a 10% solute concentration?
A. Water molecules would leave the cell by osmosis. B. Water molecules would enter the cell by osmosis. C. Water molecules would cross the membrane in both directions, but there would be no net movement of water molecules. D. There would be no movement of water molecules in either direction. E. Solute molecules would leave the cell by osmosis.
Locations where molten rock rupture a tectonic plate are called:
a. hot spots b. faults c. ridges d. weak spots e. trenches
The three processes that are commonplace throughout the evolutionary history of a species and illustrate that macroevolution is not goal-directed are speciation, diversification, and extinction.
Answer the following statement true (T) or false (F)
A gram negative bacillus was recovered from the uring of a child with a history of recurrent urinary tract infections. The organisms was oxidase negative, non-lactose fermenter, indole negative urease positive, motile, and ornithrine decarboxylase positive. The most likely identification of this organism would be :
A. Proteus mirabilis B. Shigella Sonnei C. Escheriv=chia coli D. Klebsiella pneumoniae