unit 1 introduction to biology. know all lab safety rules

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.