Transcript Chapter 1

Chapter 1
Introduction to
Biology & Scientific
Method
Essential Questions for Chapter 1
•
What are components that must be possessed by life?
•
How is the scientific method used in problem solving
in science?
•
How are data collected and analyzed appropriately in a
science setting to help answer a question or solve a
problem?
•
What skills and habits are necessary to safely work in
the science laboratory?
BIOLOGY
BIOLOGY
• The study of living things (biotic factors)
– Bio: life, logy: study of
• Within Biology we also study how living
things interact with non-living (abiotoic
factors) things and their surroundings. This
is called Ecology
– Eco: Environment
Components of Living Things
1.
Made up of cell(s)
•
2.
Able to reproduce
•
3.
6.
7.
8.
Asexual or Sexual
Obtain and use energy:
Metabolism
•
4.
5.
Unicellular or multicellular
Autotrophic or Heterotrophic
Genetic code: DNA
Internal Balance:
Homeostasis
Respond to a stimuli
Growth, Development, and
Differentiation
Change over time in an
organism: Evolution
Scientific Method
1.
Ask Questions, research,
gather information
Data is collected through
observations
2.
•
•
•
3.
Quantitative: #’s
Qualitative: descriptive
Inference: prior knowledge
Hypothesis is formed
•
4.
Making a prediction on what
will happen using prior
knowledge or research
Experiment
•
•
•
Control: the group that all
results are compared to
Independent variable: the
group that has been changed
or varied
Dependent variable: what is
trying to be measured
Scientific Method Cont.
5. Record & analyze results
•
•
Results can be recorded
in a data table, graph,
diagram, ect.
Infer what the results
mean, and why the
information is important
6. Draw conclusions,
accept or decline
hypothesis
7. Create new experiment if
needed or repeat steps
to gather more data.
Lab Safety
• ALWAYS follow
directions thoroughly
in lab, and read
ahead to know what
expect!
• You MUST follow lab
rules, or bye, bye,
bye!
• See lab handout for
safety expectations
and lab tools