BIO 181 LAB MIDTERM GRAND CANYON UNIVERSITY
/ EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS
FOR GUARANTEED PASS | NEWEST UPDATE
What is a hypothesis? - (answers)- 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? - (answers)- Is a default assumption that an explanation
or prediction is false.
What is an alternative hypothesis? - (answers)- 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? - (answers)- 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? - (answers)- 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? - (answers)- The section of the experiment
involving manipulation of an independent variable.
, What is the control group? - (answers)- 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? - (answers)- It involves suggesting
possible answers to proposed scientific questions in a predictive and explanatory
form.
What are the five steps in the scientific method? - (answers)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.
What is the formula to find the % change in weight? - (answers)Final weight -
Initial weight/ initial weight X 100
How do you calculate total magnification? - (answers)diameter of high(er)
power=Diameter (lower power) X magnification(low power)/Magnification at
higher power
/ EXPERT VERIFIED ACTUAL QUESTIONS & ANSWERS
FOR GUARANTEED PASS | NEWEST UPDATE
What is a hypothesis? - (answers)- 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? - (answers)- Is a default assumption that an explanation
or prediction is false.
What is an alternative hypothesis? - (answers)- 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? - (answers)- 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? - (answers)- 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? - (answers)- The section of the experiment
involving manipulation of an independent variable.
, What is the control group? - (answers)- 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? - (answers)- It involves suggesting
possible answers to proposed scientific questions in a predictive and explanatory
form.
What are the five steps in the scientific method? - (answers)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.
What is the formula to find the % change in weight? - (answers)Final weight -
Initial weight/ initial weight X 100
How do you calculate total magnification? - (answers)diameter of high(er)
power=Diameter (lower power) X magnification(low power)/Magnification at
higher power
