Multiple Choice
How did Barry Marshall test the hypothesis that H. pylori causes stomach ulcers?
A) He surveyed people with stomach ulcers about the acidity of their food.
B) He ingested live H. pylori and developed acute stomach pain.
C) He interviewed physicians who performed surgeries on ulcer patients.
D) He fed spicy foods to laboratory rats to eliminate an alternate hypothesis.
Correct Answer:
Verified
Correct Answer:
Verified
Q44: In science, what would an individual's personal
Q45: When might bias in an experiment occur?<br>A)
Q46: Which of the following is a sign
Q47: Deductive reasoning is used to make _
Q48: What is the purpose of double-blind experiments?<br>A)
Q50: A researcher has hypothesized that the chemical
Q51: When would a large difference between the
Q52: What would be the most trustworthy source
Q53: Which statement makes a prediction for the
Q54: What might be the next step if