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BIO 181 LAB MIDTERM EXAM
QUESTIONS WITH VERIFIED
SOLUTIONS – GRAND CANYON
UNIVERSITY
What is a hypothesis? - correct-answer - - A tentative explanation thetas given
and can be tested.
- Predictions that can be tested by conducting observations or by performing
experiments.
What is a null hypothesis? - correct-answer - - Is a default assumption that an
explanation or prediction is false.
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What is an alternative hypothesis? - correct-answer - - Is the alternative
explanation to the null hypothesis thetas accepted as a best explanation if the null
hypothesis is rejected.
What is a dependent variable? - correct-answer - - The elements measured or
counted by an investigator in response to a change in an experiment as a result of
a change in the independent variable.
What is an independent variable? - correct-answer - - The variable that
drives/manipulates a change in the dependent variable. the investigator assumes
that experimental outcomes can be predicted and even changed by
changing/manipulating an independent variable.
What is an experimental group? - correct-answer - - The section of the experiment
involving manipulation of an independent variable.
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What is the control group? - correct-answer - - The section of the experiment in
which an independent variable is omitted or set a standard value. The control
group helps to evaluate how the manipulation of the independent variable affects
the outcome of the experiment.
Why is it important to formulate a hypothesis? - correct-answer - - It involves
suggesting possible answers to proposed scientific questions in a predictive and
explanatory form.
What are the five steps in the scientific method? - correct-answer - 1) Making
observations
2) Formulating a hypothesis
3) designing an experiment to test the hypothesis
4) Presenting and analyzing results
5) Interpreting and communicating results.
BIO 181 LAB MIDTERM EXAM
QUESTIONS WITH VERIFIED
SOLUTIONS – GRAND CANYON
UNIVERSITY
What is a hypothesis? - correct-answer - - A tentative explanation thetas given
and can be tested.
- Predictions that can be tested by conducting observations or by performing
experiments.
What is a null hypothesis? - correct-answer - - Is a default assumption that an
explanation or prediction is false.
,2|Page
What is an alternative hypothesis? - correct-answer - - Is the alternative
explanation to the null hypothesis thetas accepted as a best explanation if the null
hypothesis is rejected.
What is a dependent variable? - correct-answer - - The elements measured or
counted by an investigator in response to a change in an experiment as a result of
a change in the independent variable.
What is an independent variable? - correct-answer - - The variable that
drives/manipulates a change in the dependent variable. the investigator assumes
that experimental outcomes can be predicted and even changed by
changing/manipulating an independent variable.
What is an experimental group? - correct-answer - - The section of the experiment
involving manipulation of an independent variable.
, 3|Page
What is the control group? - correct-answer - - The section of the experiment in
which an independent variable is omitted or set a standard value. The control
group helps to evaluate how the manipulation of the independent variable affects
the outcome of the experiment.
Why is it important to formulate a hypothesis? - correct-answer - - It involves
suggesting possible answers to proposed scientific questions in a predictive and
explanatory form.
What are the five steps in the scientific method? - correct-answer - 1) Making
observations
2) Formulating a hypothesis
3) designing an experiment to test the hypothesis
4) Presenting and analyzing results
5) Interpreting and communicating results.
