Helicobacter pylori causes
A. duodenal ulcers.
B. gastritis.
C. stomach ulcers.
D. increased risk for stomach cancer.
E. All of the choices are correct.
Answer: E
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When an electron moves from the outer shell of one element to the outer shell of another element, a(n) ________ bond has been created
Fill in the blank(s) with correct word
DNA synthesis:a
is unidirectional. b. is facilitated by a phosphodiester linkage. c. occurs only once during each cell generation. d. has few mechanisms for fixing errors. e. is proofread by DNA ligase.
Identify and briefly describe the two phyla of seedless vascular plants. Include one or two representatives of each
phylum. What will be an ideal response?
You are asked to help solve a murder, and a note from the murderer taunting the police says that the crime was committed using a lipid. What molecule could you exclude from your search?
What will be an ideal response?