Infection with ________ may result in peptic ulcers and stomach cancer
A) Campylobacter jejuni
B) Helicobacter pylori
C) Borrelia recurrentis
D) Vibrio parahaemolyticus
E) Rickettsia rickettsii
B
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The first drug produced using recombinant DNA technology was
A) insulin. B) streptokinase. C) tissue plasminogen activator. D) erythropoietin.
A human host can prevent a pathogen from getting enough iron by all of the following except
a. reducing dietary intake of iron. b. binding iron with transferrin. c. binding iron with hemoglobin. d. binding iron with ferritin. e. binding iron with siderophores.
Enzymes affect the reactions in living cells by changing the
a) products of the reaction b) speed of the reaction c) temperature of the reaction d) pH of the reaction
A typical Euglena cell is elongated and bounded by a ________.
A. cytoproct B. protuberance C. plasmalemma D. pellicle