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Unit 1Introduction to Biology
Know all lab safety rules
What is Biology?
The study of living things
What does this phrase represent in science?
“King Henry Died By Drinking Chocolate Milk”
Metric SystemKnow how to convert one type of unit into another.
KH
d
D
cm
Name the four main types of
basic metric units.
Meter - Length Liter - VolumeGram - MassCelsius - Temperature
Convert25.6 cm = __?__ Km
K H D B D C M
0.00025625.6 cm = _______ KmHow did we get that?
K H D B D C M
0.000256
What are the steps of the scientific method?
What is important about a hypothesis?
Scientists observe the world and want to know
why things happen
Scientists develop an “If, then” statement.
Scientists must be able to TEST their
hypothesis
Scientists look at their data
Was the hypothesis supported or not
supported? Why or why not?
Observation Problem/Question
Hypothesis
ExperimentScientists test their
hypothesis and collect data
Data Analysis
Conclusion
Report Findings Scientists want others to know and they can also
test the findings
What is a CONTROL group?
What is a Zero Treatment Control?
What is an Experimenter Selected
Control?
What is a CONTROL group? Used as a COMPARISON tool for your data. It does NOT get the IV.(such as the plant that gets normal
amt of light)
What is a Zero Treatment Control?
Control group gets NO treatment Ex: No jumping jacks and measure
pulse vs. 100 jumping jacks and measure pulse
What is an Experimenter Selected Control?
The experimenter chooses the control. Ex: Regular dog food and dog growth vs. New improved dog
food and dog growth
What are VARIABLES?
What are VARIABLES?
Things that are changed in an experiment
What is the INDEPENDENT VARIABLE?
Normal Sun 1 Hr of Sun 2 Hrs Sun 3 Hrs of Sun
Measuring plant height (growth) after 7 days.
I.V. = Amount (Hrs) of Sun given to the plantsWhat “I” change in the experiment.
What is the DEPENDENT VARIABLE?
Normal Sun 1 Hr of Sun 2 Hrs Sun 3 Hrs of Sun
Measuring plant height (growth) after 7 days.
D.V. = The height of the plants after 7 days
The “D”ata collected.
What is the control in this plant experiment?
Plant that gotNormal Sun
Experimenter selected control
What could be some constants in this plant experiment?
•Soil •Amount of water•Type of plant•Size of container
CONSTANTSThese items all stay the same from one plant to the next
What is DATA?
What is DATA?Information collected from conducting an experiment.
What is QUANTITATIVE DATA?
Quantitative Data that is measured and numbers are obtained
ObservationsHint: Quantitative has an “N” for NUMBERS
What is QUALITATIVE DATA?
Qualitative Data obtained using 5 senses
ObservationsColor, sound, taste, etc.
What is a THEORY?
What is a THEORY?
A well tested hypothesis that is supported by repeated testing.
What are the 8 Characteristics of Life?
What are the 8 Characteristics of Life?
Metabolize gain and use energy (food)Made of at least 1 or more cellsDNA (Universal Genetic Code) GeneticsReact to environment (Put on coat when cold)Adapt/Evolve- Adjust to your environment (More fur in cold climates)Homeostasis – Maintain stable internal environmentGrow and Develop (Baby to adult to old man)Reproduce – must do this for species to survive
Name the levels of living things largest to smallest
Biosphere = All areas of earth with lifeEcosystem = Living and non-living in an areaCommunity = Different species in an areaPopulation = Same species (organisms) in an areaOrganism = Group of organ systems make up thisOrgan system = Group of organs working togetherOrgan = Group of tissues working together Tissue = Group of cells working togetherCell = SMALLEST LIVING THING!!!
Molecule = Units that make up cells NOT LIVING
Which is the Zoologist and which is the Botanist?
Which is the Zoologist and which is the Botanist?
What is the main definition of a species?
Must be able to reproduce and produce fertile offspring.
What is the main definition of a species?
What is metabolism?
What is metabolism?
Process of gaining and using energy
What is …
What is …
Keeping a stable internal environment such as temperature or pH.
