BIO 181 LAB MIDTERM GRAND CANYON
UNIVERSITY / EXPERT VERIFIED ACTUAL QUESTIONS
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UPDATE, 2025-2026.
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Terms in this set (62)
What is a hypothesis? - A tentative explanation thetas given and can betested.
- Predictions that can be tested by conductingobservations or
by performing experiments.
What is a null hypothesis? - Is a default assumption that an explanation or prediction is
false.
What is an alternative - Is the alternative explanation to the null hypothesis thetas
hypothesis? accepted as a best explanation if the null hypothesis is rejected.
, What is a dependent - The elements measured or counted by an investigator in
variable? response to a change in an experiment as a result of a
change in the independent variable.
What is an independent - The variable that drives/manipulates a change in the
variable? dependent variable. the investigator assumes that
experimental outcomes can be predicted and even
changed by changing/manipulating an independent
variable.
What is an experimental - The section of the experiment involving manipulation of
group? an independent variable.
What is the control group? - 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 - It involves suggesting possible answers to proposed scientific
formulate a hypothesis? questions in a predictive and explanatory form.
What are the five steps in 1) Making observations
the scientific method? 2) Formulating a hypothesis
3) designing an experiment to test the hypothesis
4) Presenting and analyzing results
5) Interpreting and communicating results.
What is the formula to find Final weight - Initial weight/ initial weight X 100
the % change in weight?
How do you calculate total diameter of high(er) power=Diameter (lower power) X
magnification? magnification(low power)/Magnification at higher power
How do you estimate size of Object size=% occupied by object in the FOV X diameter of the
an organism? FOV
What is the revolving Changes objective lenses
nosepiece?
UNIVERSITY / EXPERT VERIFIED ACTUAL QUESTIONS
& ANSWERS FOR GUARANTEED PASS | NEWEST
UPDATE, 2025-2026.
Practice questions for this set
Learn
Studied terms
Nice work, you're crushing it
Continue studying in Learn
Terms in this set (62)
What is a hypothesis? - A tentative explanation thetas given and can betested.
- Predictions that can be tested by conductingobservations or
by performing experiments.
What is a null hypothesis? - Is a default assumption that an explanation or prediction is
false.
What is an alternative - Is the alternative explanation to the null hypothesis thetas
hypothesis? accepted as a best explanation if the null hypothesis is rejected.
, What is a dependent - The elements measured or counted by an investigator in
variable? response to a change in an experiment as a result of a
change in the independent variable.
What is an independent - The variable that drives/manipulates a change in the
variable? dependent variable. the investigator assumes that
experimental outcomes can be predicted and even
changed by changing/manipulating an independent
variable.
What is an experimental - The section of the experiment involving manipulation of
group? an independent variable.
What is the control group? - 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 - It involves suggesting possible answers to proposed scientific
formulate a hypothesis? questions in a predictive and explanatory form.
What are the five steps in 1) Making observations
the scientific method? 2) Formulating a hypothesis
3) designing an experiment to test the hypothesis
4) Presenting and analyzing results
5) Interpreting and communicating results.
What is the formula to find Final weight - Initial weight/ initial weight X 100
the % change in weight?
How do you calculate total diameter of high(er) power=Diameter (lower power) X
magnification? magnification(low power)/Magnification at higher power
How do you estimate size of Object size=% occupied by object in the FOV X diameter of the
an organism? FOV
What is the revolving Changes objective lenses
nosepiece?
