Pyelonephritis may result from

A) urethritis.
B) cystitis.
C) ureteritis.
D) systemic infections.
E) All of the answers are correct.


E

Biology & Microbiology

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The concept of a species was proposed by

A. Charles Darwin. B. John Ray. C. Carolus Linneaus. D. Erasmus Darwin. E. George Cuvier.

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What prevents a plant cell from bursting in a hypotonic solution?

a. plasma membrane b. transport proteins which help pump the excess water out of the cell c. cell wall d. a plant cell will not burst in a hypotonic solution because water is moving out of the cell

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The mass extinction at the end of the Cretaceous period was likely the result of:

a. rising seawater. b. loss of vegetation. c. extreme predation. d. a dramatic change in climate. e. the appearance of new competitors.

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The Central Dogma of biology can be stated as

A. proteins? RNA? DNA. B. DNA? proteins? RNA. C. RNA? DNA? proteins. D. DNA? RNA? proteins.

Biology & Microbiology