UNIT 1 Overview of Biology

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UNIT 1 Overview of Biology

• Chapter One
• What is Life?

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Alive or Dead?

• Baby F.
• Copepod eggs
• Diapause
• Lotus seed
• Bacteria

Bioethics
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Characteristics of Life

• Organization
• Energy Use and Metabolism
• Homeostasis
• Reproduction, Growth and Development
• Irritability and Adaptation

Organism
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Organization

• Form and Function Interdependent
• Distinct Characteristics
• Emergent Properties
• 3-D relationship
• Organ systems
• Organs
• Tissues
• Cells
• Organelle
• Biochemicals

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Energy Use Metabolism

• Entropy vs. Energy
• 2nd Law of Thermodynamics
• Environment as energy source
• Metabolism

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3 Classes of Organisms

• Producer (Autotroph)
• Consumer (Heterotroph)
• Decomposer

Food Web feeding relationships
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DEFINITIONS

• Population
• Species
• Community
• Ecosystem
• Biosphere

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Homeostasis

• Maintenance of Internal Constancy
• H2O Balance
• Temperature
• Waste Removal
• Regulation of Chemicals
• Respond to Environmental Stimuli

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• Reproduction
• Asexual
• Sexual
• Growth
• Development

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Irritability and Adaptation

• Immediate, essential response to stimuli
• Inherited characteristic or behavior
• Over time
• Complex and specific
• Diverse
• Natural Selection Survival of the Fittest

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BIODIVERSITY

• Taxonomy
• Taxa (Taxon)
• Taxonomic Groups
• -Domain
• -Kingdom
• -Phylum
• -Class
• -Order
• -Family
• -Genus
• -species
• Binomial Name (Scientific Name)

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Kingdom Classification Criteria

• Cellular Complexity
• -Unicellular vs. Multicellular
• -Prokaryotic vs. Eukaryotic
• Mode of Nutrition
• -Heterotroph
• -Autotroph

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Monera Unicellular, Prokaryote
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Protista Various Eurkaryotes
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Fungi Detritous feeding, cell wall of chitin
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PLANTAE Multicellular, eukaryote. Cell wall of
cellulose
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Animalia Multicellular eukaryotes Heterotrophi
c