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Transcript
Biology 105
Unit 1: Biology a view of
Life
Pgs 1-19
Student Outcomes
Distinguish
nonliving.
between the living and
Describe
the levels of biological
organization from smallest to largest.
Compare
life.
and contrast the 3 domains of
Student Outcomes
Give
a brief overview of the relationship
between evolution and biology.
Describe
the flow of energy through
ecosystems.
Understand
and Perform steps of the
scientific method.
Key Terms
Prokaryote
Eukaryote
Homeostasis
Stimulus
Adaptation
Biosphere
Theory
Evolution
Classification Heterotroph
Binomial Nomenclature
Natural Selection
Metabolism
Response
Taxonomy
Hypothesis
Autotroph
Mutation
Science
In
Latin means to know or to discover
Based on Direct Observations and a
Testable Hypothesis
Measureable
Not a ‘belief’
Living vs Nonliving
Organisms….
Are
composed of cells
Grow and Develop
Perform and regulate chemical activities
Respond to stimuli
Reproduce
Evolve and adapt to the environment
Levels of Organization
(smallest to largest)
Atoms - _____________
Molecules - _____________
Cells - _______________
Tissues - _____________
Organs - ______________
Organ Systems - _____________
Organism - ________________
Levels of Organization
(smallest to largest)
Population
Community
Ecosystem
Biosphere
Systematics
(study of diversity and relationships of organisms)
* Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
Domains
Eubacteria
Archaea
Eukarya
- (Eukaryotes)
Kingdoms
Eubacteria
- bacteria
Archaea
- Archaebacteria
Eukarya
- Animalia, Fungi, Plantae,
Protista
Major Themes
Evolution
over time
- Populations will change ‘evolve’
Information
Transfer-cells must
communicate with each other and from
parent to offspring.
Energy
energy
For Life - continuous supply of
Species evolve
Natural
selection drives the evolution of
organisms (finches, pests, superbugs)
Darwin’s
Origin of Species in 1859
Variations
New
by mutations
discoveries in genetics have given
support to the evolution theory
Energy Pyramid
Producers
Consumers
Decomposers
Energy Pyramid
Producers - Autotrophs - Photosynthesis
Consumers/Decomposers - Heterotrophs
Primary consumers - Herbivores
Secondary consumers - carnivores
Teritiary consumers - carnivores
(What would a venus fly trap be???)
Energy Pyramid
What
supplies the initial energy?
Where is energy converted?
When/Where is energy lost?
What happens when an organisms
dies?
Scientific Method
Problem/Question
Research
Hypothesis
Experiment
Data
Gathering and Analyzing
Conclusion
Scientific Method cont.
After
experiment is repeated, then
publish findings and limitations.
Experiment
and findings must be
supported by others-Peer Review
Hypothesis
Two
Types
Null
Hypothesis
Directional
Hypothesis
Hypotheses
(see next slide first)
Effect music has on the growth of plants.
Effect
music has on a person’s ability to
retain information while studying.
Effect music has on 17 year olds ability to
retain information while studying.
Effect music has on 17 year old males
ability to retain information while studying.
Experiment
Must
include a control for
comparison
Must be appropriate sample size
Must be repeatable
Two types of variables:
IV-independent variable
DV-dependent variable
Avoiding bias
Blind
study
Double
blind study
Data
Must
Use
be recorded unbiased
standard deviation to determine
if data from the variable is
statistically different.
Conclusion
Not
important if hypothesis is
correct or not.
Information
learned about the
question is what is important!!!
Science Theories
The longer a theory exists in time
and/or the more effort to prove it false
the stronger the theory becomes.