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
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The enzyme succinate dehydrogenase is located in the inner mitochondrial membrane and is directly
involved in what two steps of cellular respiration?
a. glycolysis and pyruvate oxidation b. pyruvate oxidation and citric acid cycle c. citric acid cycle and electron transfer system d. electron transfer system and glycolysis e. electron transfer system and fermentation
A nematocyst is a type of stinging cell
____________________ Indicate whether the statement is true or false.
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.
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.