Most peptic ulcers are the result of colonization of the stomach by

A) Vibrio cholerae.
B) Escherichia coli O157:H7.
C) Shigella dysenteriae.
D) Salmonella enterica.
E) Helicobacter pylori.


E

Biology & Microbiology

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The enzyme succinate dehydrogenase is located in the inner mitochondrial membrane and is directly

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A nematocyst is a type of stinging cell

____________________ Indicate whether the statement is true or false.

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The "backbone" of a nucleic acid molecule is made of

A) lipids. B) NAD+ and FAD. C) amino acids. D) ATP molecules. E) sugar and phosphate groups.

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Paraneoplastic syndrome refers to.

A) the effects of substances such as hormones secreted by the tumor cells. B) severe weight loss and cachexia associated with advanced cancer. C) the decreased resistance to infection resulting from malignant tumors. D) the effects of multiple metastatic tumors.

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