BIOS 255 EXAM 1 TEST BANK QUESTIONS
AND ACCURATE ANSWERS PRACTICE
STUDY MATERIAL
●● observation
Answer: act of viewing the world around us
●● question
Answer: made based off of an observation
●● hypothesis
Answer: a tentative explanation for an observation
●● controlled experiment
Answer: - test several groups
- introduce a single variable per treatment
- keep conditions as similar as possible from one group to the next
●● conclusion
Answer: supports/refutes hypothesis
- more experimentation needed if refuted
,●● prediction
Answer: a guess of what might happen based on observation-- the
outcome you would observe if your hypothesis was supported
●● theory
Answer: a sound explanation of the world supported through continued
observation and experiments over a long period of time
●● 3 components of a controlled experiment
Answer: 1. variable
2. test group
3. control group
●● variable
Answer: feature of an experiment that is changed from one treatment to
the next
●● test group
Answer: exposed to variable in an experiment
●● control group
Answer: not exposed to the variable in an experiment
, ●● importance of test group & control group
Answer: they allow researchers to determine whether the variable in an
experiment has an effect
●● independent variable
Answer: manipulation performed on the test group
(ex. hours of tutoring)
●● which axis is the independent variable found on a graph?
Answer: x-axis
●● dependent variable
Answer: effect that is being measured
(ex. test score)
●● which axis is the dependent variable found on a graph?
Answer: y-axis
●● theory of evolution
Answer: set of hypotheses that provide a powerful explanation for both
biological observations & the diversity of life
AND ACCURATE ANSWERS PRACTICE
STUDY MATERIAL
●● observation
Answer: act of viewing the world around us
●● question
Answer: made based off of an observation
●● hypothesis
Answer: a tentative explanation for an observation
●● controlled experiment
Answer: - test several groups
- introduce a single variable per treatment
- keep conditions as similar as possible from one group to the next
●● conclusion
Answer: supports/refutes hypothesis
- more experimentation needed if refuted
,●● prediction
Answer: a guess of what might happen based on observation-- the
outcome you would observe if your hypothesis was supported
●● theory
Answer: a sound explanation of the world supported through continued
observation and experiments over a long period of time
●● 3 components of a controlled experiment
Answer: 1. variable
2. test group
3. control group
●● variable
Answer: feature of an experiment that is changed from one treatment to
the next
●● test group
Answer: exposed to variable in an experiment
●● control group
Answer: not exposed to the variable in an experiment
, ●● importance of test group & control group
Answer: they allow researchers to determine whether the variable in an
experiment has an effect
●● independent variable
Answer: manipulation performed on the test group
(ex. hours of tutoring)
●● which axis is the independent variable found on a graph?
Answer: x-axis
●● dependent variable
Answer: effect that is being measured
(ex. test score)
●● which axis is the dependent variable found on a graph?
Answer: y-axis
●● theory of evolution
Answer: set of hypotheses that provide a powerful explanation for both
biological observations & the diversity of life
