Biology I UNIT 1 NATURE OF SCIENCE. Science An organized way of using evidence to learn about the natural world. It is both a body of knowledge and a.

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Presentation transcript:

Biology I UNIT 1 NATURE OF SCIENCE

Science An organized way of using evidence to learn about the natural world. It is both a body of knowledge and a process.

Biology Biology is the study of life (organisms)

Characteristics of life Orderly structure or organization cells→tissues→organs→organ systems→organism 2. Reproduction species 3. Growth and Development 4. Respond to stimuli

Stimulus Response Adaptation Internal environment

Nature of Science Equipment, Procedures, and Safety

1.1 Handling, Measuring, and Storing Liquids Accuracy-a correct measurement; how close you are to the target.

Precision- reproducibility of the measurement. It also be thought of as how many decimal places are in a measurement.

Do accuracy and precision go hand in hand?

Measuring and Dispensing Liquids Graduated cylinder - accurately measures volumes of liquids, usually in mL. Read the bottom of the meniscus.

Pipettes, Syringes, Burettes Syringe

Handling and Storing Liquids Test tubes-used for mixing and handling.

Beakers and Erlenmeyer Flasks

1.2 Scientific Measurements Measuring Mass and Weight

Mass A measurement of how much matter is in an object. Is constant Unit of measure-gram Instrument of measure-balance

Triple Beam Balance

Reading a triple beam balance

Weight A measurement of the force of gravity on an object. Changes in relationship to force of gravity. Unit of measure - Newtons (N) Instrument of measure - spring scale

Measuring Length Metric rulers or meter sticks are used to determine length in meters, centimeters, or millimeters.

Determining Temperature Temperature is a measure of the average kinetic energy of particles in an object. Thermometers measure temperature in degrees Celsius ( o C)

Section 1.4 Equipment Used for Heating

Bunsen Burner Hottest part of flame

Proper Way to Hold a Test Tube Over a Bunsen Burner

Hot Plates

Other Biological Tools

Centrifuge

Gel Electrophoresis

Cell Culture using Petri Dishes

Column Chromatography

Microscopes Compound light microscope Electron microscope

Equipment Used in Handling Hot Glassware

Section 1.5 Safety and Protective Equipment

Know the location of the following: Emergency eyewash station. Safety Shower Absorbent materials Biohazards container Fire Extinguisher

Common Safety Equipment

Section 1.6 Safety Procedures and Common Safety Symbols