Biology I UNIT 1 NATURE OF SCIENCE. Science An organized way of using evidence to learn about the...
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Transcript of Biology I UNIT 1 NATURE OF SCIENCE. Science An organized way of using evidence to learn about the...
Biology IUNIT 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?
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 (oC)
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