A View of Life

1
A View of Life
2
Biology- Study of living things

• Level of biological hierarchy
• Cell
• Tissues
• Organs
• System
• Population
• Communities
• Ecosystem
• Biosphere

3
Living things

• Are organized (prior slide)
• Acquire materials and energy
• Energy
• Metabolism
• Photosynthesis
• homeostasis

4
Living things

• Respond usually results in movement, ensures
  survival and carry on daily activities
• Reproduce and develop
• Reproduce
• genes

5
Living things

• Have adaptations modifications that make an
  organism suited to its way of life
• Natural selection
• Species
• evolution

6
Biosphere

• Energy
• In ecosystems, the same nutrients keep cycling
  through populations and eventually becomes heat
• Human population and the environment
• Preservation of ecosystems if of primary
  importance
• Biodiversity
• Total number and relative abundance of species,
  variability of genes and different ecosystems

7
Classification of living things

• 3 domains
• Eukarya eukaryotic
• Archaea - prokaryotic
• Bacteria prokaryotic
• Kingdoms
• Protists uni/multicellular, various nutrition
• Fungus saprotrophs, molds, mushrooms
• Plant multi, photosynthetic
• Animal multi, heterotrophic

8
Scientific process

• Observation
• Hypothesis
• Experiments/further observations
• prediction
• Experiment
• Experimental design
• Experimental variable variable being tested
• Dependent variable result or change that occurs
• Control
• Collecting of data

9
Scientific process

• Conclusion
• Scientific theory
• Concepts that join together well-supported and
  related hypotheses
• Principle theories that are generally accepted
  by an overwhelming number of scientists
• law