Transcript Chapter 1 A view of Life

A View of Life
Biology- Study of living things
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Level of biological hierarchy
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Cell
Tissues
Organs
System
Population
Communities
Ecosystem
Biosphere
Living things:
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Are organized (prior slide)
Acquire materials and energy
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Energy
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Metabolism
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Photosynthesis
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homeostasis
Living things:
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Respond – usually results in movement,
ensures survival and carry on daily activities
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Reproduce and develop
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Reproduce
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genes
Living things:
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Have adaptations – modifications that make
an organism suited to its way of life
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Natural selection
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Species
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evolution
Biosphere
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Energy
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Human population and the environment
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In ecosystems, the same nutrients keep cycling
through populations and eventually becomes heat
Preservation of ecosystems if of primary
importance
Biodiversity
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Total number and relative abundance of species,
variability of genes and different ecosystems
Classification of living things
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3 domains
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Eukarya – eukaryotic
Archaea - prokaryotic
Bacteria – prokaryotic
Kingdoms
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Protists – uni/multicellular, various nutrition
Fungus – saprotrophs, molds, mushrooms
Plant – multi, photosynthetic
Animal – multi, heterotrophic
Scientific process
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Observation
Hypothesis
Experiments/further observations
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prediction
Experiment
Experimental design
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Experimental variable – variable being tested
Dependent variable – result or change that occurs
Control
Collecting of data
Scientific process
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Conclusion
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Scientific theory
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Concepts that join together well-supported and
related hypotheses
Principle – theories that are generally accepted
by an overwhelming number of scientists
law