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20 Cards in this Set
- Front
- Back
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What kind of questions can science answer?
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Science helps to explain observable phenomena
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What is a hypothesis?
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A hypothesis is an educated prediction.--based on some prior knowledge of the subject
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Hypothesis Testing
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To gain support for hypothesis it must be tested. Hypothesis are supported/accepted or rejected.
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What is a scientific theory?
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A hypothesis that has been repeatedly supported by a vast amount of experimental data and observations.
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What is a scientfic law?
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A hypothesis that has gained so much support and the fact that there has been no other hypothesis to discount it.
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Scientific Method of Testing Hypotheses
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1. Ask a question
2. Form a hypothesis and make a prediction 3. Conduct experiments, make observations, collect results 4. Form a conclusion based on results |
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What is biology?
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Biology is the scientific study of life.
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What are the Properties of Life?
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1. Order (structure)
2. Evolution/Adaptation (populations can adapt over time) 3. Response (to environment) 4. Regulation (regulate itself to the environment) 5. Energy Processing (food, sun light) 6. Growth & Development 7. Reproduction |
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Hierarchy of Biological Organization
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1) Atom (smallest unit)
2) Molecule 3) Organelle (part of a cell) 4) Cells 5) Tissue (skin) 6) Organ (heart made of muscle tissue) 7) Organism 8) Population 9) Community 10) Ecosystem |
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Emergent Properties of Systems
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New properties emerge with each step up in the hierarchy of biological order
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Diversity & Unity of Life --
What is taxonomy? |
The branch of biology that names and classifies species
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Grouping Species
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Organisms grouped together based on shared traits
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Three Domains of Life
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Bacteria
Archaea Eukarya (kingdoms..) |
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Domains - Bacteria & Archaea
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Consist of prokaryotes
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Domain - Eukarya
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Have eukaryotic cells
Protista & Fungi (kingdoms) Plantae & Anamalia (kingdoms) |
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Unity in Diversity
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There is evidence of shared ancestry.
Evolution contributes to diversity. |
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Natural Selection
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"Origin of the Species" by Darwin
Natural selection if the mechanism of evolution |
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Summary of Natural Selection
What are Darwin's Observations? |
1) Individual variation - individuals w/in a population vary in many heritable traits
2) Struggle for existence - limited resources limit number of surviving offsprings 3) Differential reproductive success - those w/ best suited traits survive better & thus reproduce more than those with less favorable traits |
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What is meant by Form Fits Function?
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Organisms adapt physically to special circumstances of their way of life
Examples: Bird's hallow & light wing bones to enable flight; bird's wing shaped to enable flight; duck's webbed feet to enable movement through water |
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Sharing of Ancestors - Charting
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Use of a Cladogram meant to show evolutionary relationship among species
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