Bio 151 Lab Quiz with Correct Answers
2025
LAB 1
State lab safety rules and policies for the physiology lab. <correct answer>Do NOT eat
or drink in the laboratory. Leave all food and drink (INCLUDING WATER BOTTLES)
outside the laboratory room if possible or in a designated area.
Wear shoes and clothing which protect against broken glass or spillage. Pin or tie long
hair back away from face and eyes.
Cover any cuts or abrasions before coming to the laboratory and wear gloves when
instructed.
Wear safety glasses or goggles during activities involving the use of caustic or
corrosive chemicals and at any other times as directed by your instructor.
Do NOT pipette anything by mouth; use pipetting devices.
Assume that all reagents are hazardous. Read labels carefully and label all containers.
If chemicals come into contact with skin, wash immediately with water.
Do not carry reagent bottles to your station. Take your transfer container to the reagent
bench. Stopper all reagent bottles when not in use taking care that the correct stopper is
used.
Take only the amount of reagent required for the laboratory to avoid waste.
Stopper all reagent bottles when not in use.
Do NOT put chemicals back into containers unless instructed to do so.
Dispose of reagents and other materials used in the laboratory in containers or down
the sink as instructed.
Keep work area neat, clean and organized. Any bags or books not required for the
laboratory should be placed out of the way.
Handle hot glassware with tongs or protective materials.
Learn the correct operation of any equipment before use.
,Take care in lighting bunsen burners and turn the gas off when not in use.
Before coming to the lab, familiarize yourself with the experiments which will be done
and carefully follow written or verbal procedures.
Report all accidents and spills to the instructor immediately.
Report any condition that appears unsafe or hazardous.
Remove label
- Describe the process of the scientific method and experimental design. <correct
answer>1. observation
an event or phenomenon that rouses our curiosity
leads to questions and literature search of related events or phenomena
2. generation of hypothesis
a tentative explanation for an observation
based in part on some prior knowledge
must be testable and falsifiable
3. testing the hypothesis
experimental results must be replicable
numerous repetitions are necessary for statistical analysis
includes various components:
independent variable dependent variable controlled variables
levels of treatment
control
what you wish to test the effects of
(plotted on the x axis)
what you measure
(plotted on the y axis)
other variables which may affect the dependent variable, and which must be kept
constant
range of independent variable you wish to test the effect of
basis for comparison; group in which the independent variable is not manipulated
4. presentation and analysis of data
ensure adequate data is collected
statistical evaluation
presentation as tables or figures
line graph bar graph
histogram
, pie graph
table
presents continuous data as line or lines (e.g. increase in growth over time)
presents categorical data as discreet bars (e.g. number of nests in different study areas)
presents continuous data as a series of grouped bars (e.g. frequencies at which
different body heights occur among adult females, etc.)
presents relative proportions of a whole (e.g. percentage of caloric intake from proteins /
carbohydrates / lipids); not commonly used in the natural sciences
presents large amounts of data and specific values (e.g. heights of newborns at 1-week
intervals over a 6-month period)
Figures (e.g. line or bar graphs or frequency histograms) are generally preferable over
tables whenever possible..... 'a picture is worth a thousand words'
5. conclusions
derived on the basis of data
accept or rejec
Identify components of the scientific method and experimental design in various
examples.
o This includes identification of independent and dependent variables, as well as
controlled variables and a control.
o You should also know when to use a line graph vs. a bar graph, and which
variable goes on which axis (i.e., independent variable on the x-axis, dependent
variable on the y-axis). <correct answer>1. Identify the dependent variable and the
independent variable in each of the following experiments:
a) Heart rate of cross-country skiers is recorded at various environmental temperatures
dependent variable ____________________________________ independent variable
____________________________________
b) Various cycling teams train at different altitudes to determine the effect on VO2 max.
dependent variable ____________________________________ independent variable
____________________________________
c) Height of a child is recorded monthly for a period of one year dependent variable
____________________________________ independent variable
____________________________________
d) The effect of simvastatin dosage (a cholesterol synthesis blocking medication) on
serum LDL cholesterol in hyperlipidemic patients
dependent variable ____________________________________ independent variable
____________________________________
2025
LAB 1
State lab safety rules and policies for the physiology lab. <correct answer>Do NOT eat
or drink in the laboratory. Leave all food and drink (INCLUDING WATER BOTTLES)
outside the laboratory room if possible or in a designated area.
Wear shoes and clothing which protect against broken glass or spillage. Pin or tie long
hair back away from face and eyes.
Cover any cuts or abrasions before coming to the laboratory and wear gloves when
instructed.
Wear safety glasses or goggles during activities involving the use of caustic or
corrosive chemicals and at any other times as directed by your instructor.
Do NOT pipette anything by mouth; use pipetting devices.
Assume that all reagents are hazardous. Read labels carefully and label all containers.
If chemicals come into contact with skin, wash immediately with water.
Do not carry reagent bottles to your station. Take your transfer container to the reagent
bench. Stopper all reagent bottles when not in use taking care that the correct stopper is
used.
Take only the amount of reagent required for the laboratory to avoid waste.
Stopper all reagent bottles when not in use.
Do NOT put chemicals back into containers unless instructed to do so.
Dispose of reagents and other materials used in the laboratory in containers or down
the sink as instructed.
Keep work area neat, clean and organized. Any bags or books not required for the
laboratory should be placed out of the way.
Handle hot glassware with tongs or protective materials.
Learn the correct operation of any equipment before use.
,Take care in lighting bunsen burners and turn the gas off when not in use.
Before coming to the lab, familiarize yourself with the experiments which will be done
and carefully follow written or verbal procedures.
Report all accidents and spills to the instructor immediately.
Report any condition that appears unsafe or hazardous.
Remove label
- Describe the process of the scientific method and experimental design. <correct
answer>1. observation
an event or phenomenon that rouses our curiosity
leads to questions and literature search of related events or phenomena
2. generation of hypothesis
a tentative explanation for an observation
based in part on some prior knowledge
must be testable and falsifiable
3. testing the hypothesis
experimental results must be replicable
numerous repetitions are necessary for statistical analysis
includes various components:
independent variable dependent variable controlled variables
levels of treatment
control
what you wish to test the effects of
(plotted on the x axis)
what you measure
(plotted on the y axis)
other variables which may affect the dependent variable, and which must be kept
constant
range of independent variable you wish to test the effect of
basis for comparison; group in which the independent variable is not manipulated
4. presentation and analysis of data
ensure adequate data is collected
statistical evaluation
presentation as tables or figures
line graph bar graph
histogram
, pie graph
table
presents continuous data as line or lines (e.g. increase in growth over time)
presents categorical data as discreet bars (e.g. number of nests in different study areas)
presents continuous data as a series of grouped bars (e.g. frequencies at which
different body heights occur among adult females, etc.)
presents relative proportions of a whole (e.g. percentage of caloric intake from proteins /
carbohydrates / lipids); not commonly used in the natural sciences
presents large amounts of data and specific values (e.g. heights of newborns at 1-week
intervals over a 6-month period)
Figures (e.g. line or bar graphs or frequency histograms) are generally preferable over
tables whenever possible..... 'a picture is worth a thousand words'
5. conclusions
derived on the basis of data
accept or rejec
Identify components of the scientific method and experimental design in various
examples.
o This includes identification of independent and dependent variables, as well as
controlled variables and a control.
o You should also know when to use a line graph vs. a bar graph, and which
variable goes on which axis (i.e., independent variable on the x-axis, dependent
variable on the y-axis). <correct answer>1. Identify the dependent variable and the
independent variable in each of the following experiments:
a) Heart rate of cross-country skiers is recorded at various environmental temperatures
dependent variable ____________________________________ independent variable
____________________________________
b) Various cycling teams train at different altitudes to determine the effect on VO2 max.
dependent variable ____________________________________ independent variable
____________________________________
c) Height of a child is recorded monthly for a period of one year dependent variable
____________________________________ independent variable
____________________________________
d) The effect of simvastatin dosage (a cholesterol synthesis blocking medication) on
serum LDL cholesterol in hyperlipidemic patients
dependent variable ____________________________________ independent variable
____________________________________
