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BIO 189 Exam 1 Ch.1-3 questions with correct answers.
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BIO 189 Exam 1 Ch.1-3 questions with correct answers.
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BIO 189 Exam 1 Ch.1-3 questions withcorrect answers
anecdotal evidence - correct answer -•an informal observation that has not been systematically tested
•can be second hand knowledge
independent variable - correct answer -the variable, or factor, being deliberately changed in the
experimental group
correlation - correct answer -a consistent relationship between two variables
*CORRELATION DOES NOT IMPLY CAUSATION
peer review - correct answer -a process in which independent scientific experts read scientific studies b4
they are published to ensure that the authors have appropriately designed and interpreted the study
epidemiology - correct answer -the study of patterns of disease in populations, including risk factors
placebo - correct answer -A fake treatment given to control groups to mimic the experience of the
experimental groups.
experimental group - correct answer -the group in an experiment that experiences the experimental
intervention or manipulation
randomized clinical trial - correct answer -a controlled medical experiment in which subjects are
randomly chosen to receive either an experimental treatment or a standard treatment (or a placebo)
•One way to avoid sample population bias
hypothesis - correct answer -a tentative explanation for a scientific observation or question
, control group - correct answer -the group in an experiment that no experimental intervention or
manipulation
dependent variable - correct answer -the measure result of an experiment, analyzed in both the
experimental and control groups
experiment - correct answer -a carefully designed test, the results of which will either support or rule
out a hypothesis
falsifiable - correct answer -describes a hypothesis that can be ruled out by data that show that the
hypothesis does not explain the observation
sample size - correct answer -the number of experimental subjects or the number of times an
experiment is repeated. In human studies, sample size is the number of participants
science - correct answer -the process of using observations and experiments to draw conclusions based
on evidence
scientific theory - correct answer -an explanation of the natural world that is supported by a large body
of evidence and has NEVER been disproved
statistical significance - correct answer -a measure of confidence that the results obtained are "real" and
not due to chance
^ samples and ^ time spent = ^significance
testable - correct answer -describes a hypothesis that can be supported or rejected by carefully
designed experiments or observational studies
What P value is significant? - correct answer -Less than .05
acid - correct answer -A substance that increases the hydrogen (H+) ion concentration of solutions
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