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BIO 181 LAB MIDTERM GRAND CANYON
UNIVERSITY 2026 100% PASS ASSURED
EXAMINATION SOLUTIONS
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.
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.
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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.
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.
BIO 181 LAB MIDTERM GRAND CANYON
UNIVERSITY 2026 100% PASS ASSURED
EXAMINATION SOLUTIONS
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.
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.
, 2 | Page
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.
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.
