BIO 189 Exam 1 Ch.1-3 exam with question and answer 100% correct
Terms in this set (126)
anecdotal evidence • an informal observation that has not been
systematically tested
• can be second hand knowledge
independent variable the variable, or factor, being deliberately changed in the
experimental group
correlation a consistent relationship between two variables
*CORRELATION DOES NOT IMPLY CAUSATION
peer review 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 the study of patterns of disease in populations, including risk
factors
placebo A fake treatment given to control groups to mimic the
experience of the experimental groups.
experimental group the group in an experiment that experiences the experimental
intervention or manipulation
randomized clinical trial 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 a tentative explanation for a scientific observation or question
control group the group in an experiment that no experimental
intervention or manipulation
dependent variable the measure result of an experiment, analyzed in both the
experimental and control groups
experiment a carefully designed test, the results of which will either
support or rule out a hypothesis
falsifiable describes a hypothesis that can be ruled out by data that
show that the hypothesis does not explain the observation
sample size 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 the process of using observations and experiments to draw
conclusions based on evidence
scientific theory an explanation of the natural world that is supported by a
large body of evidence and has NEVER been disproved
statistical significance a measure of confidence that the results obtained are "real"
and not due to chance
^ samples and ^ time spent = ^significance
testable describes a hypothesis that can be supported or rejected by
carefully designed experiments or observational studies
What P value is significant? Less than .05
acid A substance that increases the hydrogen (H+) ion
concentration of solutions
matter anything that takes up space and has mass
amino acid the building block, or monomer, of a protein
metabolism all the chemical reactions taking place in the cells of a living
organism that allow it to obtain and use energy
base • a substance that reduces the H+ ion
concentration of solutions
• Any compound that increases the number of
hydroxide ions when dissolved in water
molecule atoms linked by covalent bonds
cohesion water molecules sticking to water molecules through
hydrogen bonding
monomer One chemical subunit of a polymer
electron A negatively charged subatomic particle with negligible mass
monosaccharide The building block, or monomer, of a carbohydrate.
energy The ability to do work, including building complex molecules.
A Hypothesis must be Testable and Falsifiable
• must be never proven (can be supported)
Terms in this set (126)
anecdotal evidence • an informal observation that has not been
systematically tested
• can be second hand knowledge
independent variable the variable, or factor, being deliberately changed in the
experimental group
correlation a consistent relationship between two variables
*CORRELATION DOES NOT IMPLY CAUSATION
peer review 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 the study of patterns of disease in populations, including risk
factors
placebo A fake treatment given to control groups to mimic the
experience of the experimental groups.
experimental group the group in an experiment that experiences the experimental
intervention or manipulation
randomized clinical trial 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 a tentative explanation for a scientific observation or question
control group the group in an experiment that no experimental
intervention or manipulation
dependent variable the measure result of an experiment, analyzed in both the
experimental and control groups
experiment a carefully designed test, the results of which will either
support or rule out a hypothesis
falsifiable describes a hypothesis that can be ruled out by data that
show that the hypothesis does not explain the observation
sample size 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 the process of using observations and experiments to draw
conclusions based on evidence
scientific theory an explanation of the natural world that is supported by a
large body of evidence and has NEVER been disproved
statistical significance a measure of confidence that the results obtained are "real"
and not due to chance
^ samples and ^ time spent = ^significance
testable describes a hypothesis that can be supported or rejected by
carefully designed experiments or observational studies
What P value is significant? Less than .05
acid A substance that increases the hydrogen (H+) ion
concentration of solutions
matter anything that takes up space and has mass
amino acid the building block, or monomer, of a protein
metabolism all the chemical reactions taking place in the cells of a living
organism that allow it to obtain and use energy
base • a substance that reduces the H+ ion
concentration of solutions
• Any compound that increases the number of
hydroxide ions when dissolved in water
molecule atoms linked by covalent bonds
cohesion water molecules sticking to water molecules through
hydrogen bonding
monomer One chemical subunit of a polymer
electron A negatively charged subatomic particle with negligible mass
monosaccharide The building block, or monomer, of a carbohydrate.
energy The ability to do work, including building complex molecules.
A Hypothesis must be Testable and Falsifiable
• must be never proven (can be supported)
