Scientific method
Making observations, forming logical hypotheses, testing then and forming a conclusion
Scientific hypothesis
Leads to predictions that can be tested with additional observations or an experiment
Hypothesis
Can never be conclusively be proven to be true because we can never test all the alternatives.
Hypothesis outcome
Reject or fail to reject (correct)
A hypothesis
Must be testable and falsifiable
Theory
Broader in scope than hypothesis and supported by a large body of evidence in comparison to a hypothesis
Properties of Life
- Order
- Sensitivity or response to the environment
- Reproduction
- Adaptation
- Growth and Development
- Regulation
- Homeostasis
- Energy processing
- Evolution
What is biology?
Biology is the study of living organisms and their interaction with one another and their environment.
What does the scientific method include?
The scientific method includes making observations, forming hypotheses, testing them, and forming conclusions that lead to predictions that can be tested with additional observations or experiments.
How do we test a hypothesis?
We test a hypothesis using experiments.
What are variables in an experiment?
Variables are any part of an experiment that can vary or change during the experiment.
What are controls in an experiment?
Controls have all the parts of the experiment but never vary.
What must a hypothesis be?
A hypothesis must be testable and falsifiable.
What is a theory in biology?
A theory is a strong explanation supported by a large body of evidence in comparison to hypotheses.
What are the properties of life?
The properties of life include: 1. Order, 2. Sensitivity or response to the environment, 3. Reproduction, 4. Adaptation, 5. Growth and development, 6. Homeostasis, 7. Energy processing, 8. Regulation, 9. Evolution.
How does energy flow through an ecosystem?
Energy flows through an ecosystem as light and is generally not recycled.
What happens to chemicals in an ecosystem?
Chemicals are recycled within an ecosystem.
How do different organisms interact with energy?
Animals, plants, and fungi absorb energy in different ways.
What is cellular respiration?
The metabolism of glucose in animals.
Equation: C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (ATP)
What is photosynthesis?
The production of glucose in plants.
Equation: 6CO2 + 6H2O + energy (sunlight) → C6H12O6 + 6O2
What are the taxonomic groups in biology?
Life is classified into taxonomic groups from most inclusive to least inclusive: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
How many domains are there in the classification of life?
There are three domains: Bacteria, Archaea, and Eukarya.
What are prokaryotes?
Single-celled organisms without a nucleus or membrane-bound organelles.
What is the domain Eukarya?
Includes all eukaryotic organisms, which have a nucleus and membrane-bound organelles.
