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Unit 1 Chapter 1 What is Biology? Biology: the study of life
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Characteristics of living things: Living things have an orderly structure
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Characteristics of living things: Living things produce offspring
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Characteristics of living things: Living things grow & develop
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Characteristics of living things: Living things adjust to changes in the environment
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Methods of Biology Scientific Method As series of steps to solve a problem Experiment An investigation that tests a hypothesis by the process of collecting information under controlled conditions
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Methods of Biology Hypothesis An explanation for a question or a problem that can be formally tested Control The group in which all conditions are kept the same Theory An explanation that is supported by a large body of scientific evidence obtained from many different investigations
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Methods of Biology Independent variable The condition in an experiment that is changed Dependent variable The condition that results from changes in the independent variable
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Data (information obtained from investigations) 1) Quantitative Numerical data that may be analyzed by comparison Ex: used to make a graph or table
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Data (information obtained from investigations) 2) Qualitative Observational data, not easily expressed as quantitative information Ex: written descriptions of some phenomena
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Tools used by Biologists BeakerBunsen burner
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Tools used by Biologists CorkCover slip
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Tools used by Biologists Digital balance Dissecting tray
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Tools used by Biologists Dropper bottleFlask
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Tools used by Biologists ForcepsFunnel
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Tools used by Biologists Graduated cylinderHot plate
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Can you read the graduated cylinder?
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Tools used by Biologists Inoculating loopMeter stick
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Using an inoculating loop (by flaming for sterilization)
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Tools used by Biologists MicroscopeMicroscope slide
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Using a Compound Light Microscope
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Tools used by Biologists Mortar & pestlePetri dish
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Tools used by Biologists Pipettes: micropipettes & dropping pipettes
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Improper use of serological pipette Never pipette by mouth!!
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Tools used by Biologists Ring stand (& clamps) (uses)
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Tools used by Biologists ScalpelStereoscope
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Tools used by Biologists Spatula & Stirring rod Thermometer
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Tools used by Biologists Test tube Test tube clamp Test tube rack
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Use Test Tubes safely!
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Tools used by Biologists Triple beam balance Weight boat
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Can you read this Balance?
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