bio

• Ecosystem


  The interaction of living organisms with their physical environment
• Ecosystem


  • Abiotic (non living organism)
  • Biotic (living organisms)
• Abiotic components of an ecosystem


  • Weather
  • Mountains
  • Sun
  • Water
  • Dead animals
• Individual


  A single organism
• Species


  A group of organisms with similar characteristics that are capable of interbreeding to produce fertile offspring
• Population


  Members of one species living together at a particular place at a particular time
• Community


  Members of different species interacting together at a particular place at a particular time
• Ecosystem


  Different species interacting with their physical environment
• Ecosystem


  The interaction of living organisms with their physical environment. Ecosystem = abiotic (non living organism) + biotic (living organisms)
• Abiotic components of an ecosystem


  • weather
  • mountains
  • sun
  • water
  • dead animals
• Levels of biological organisation


  • Individual
  • Species
  • Population
  • Community
  • Ecosystem
• Individual


  A single organism
• Species


  A group of organisms with similar characteristics that are capable of interbreeding to produce fertile offspring
• Population


  Members of one species living together at a particular place at a particular time
• Community


  Members of different species interacting together at a particular place at a particular time
• Ecosystem


  Different species interacting with their physical environment
• Ecosystem


  The interaction of living organisms with their physical environment. Ecosystem = abiotic (non living organism) + biotic (living organisms)
• Abiotic components of an ecosystem


  • weather
  • mountains
  • sun
  • water
  • dead animals
• Levels of biological organisation


  • Individual
  • Species
  • Population
  • Community
  • Ecosystem
• Individual


  A single organism
• Species


  A group of organisms with similar characteristics that are capable of interbreeding to produce fertile offspring
• Population


  Members of one species living together at a particular place at a particular time
• Community


  Members of different species interacting together at a particular place at a particular time
• Ecosystem


  Different species interacting with their physical environment
• Ecosystem


  The interaction of living organisms with their physical environment
• Components of an ecosystem

  • Abiotic (non living organism)
  • Biotic (living organisms)
• Abiotic factors


  • Water
  • Temperature
  • Fire
  • Light
  • Soil minerals
  • Gas levels
• Classification of organisms


  • Land
  • Flying
  • Water
• Phylogeny


  The evolutionary history of a group of organisms that can be shown in a phylogenetic tree
• Snakes and legless lizards came from a lizard with legs but not the same lizard with legs
• Organisms can be classified not just on their physical traits but also their shared molecular sequence
• Classification to phylogeny


  1. Comparative genomics compares the sequence of common molecules to identify similarity

  2. DNA is universal and uses the same 4 bases: Adenosine, Thymine, cytosine and guanine

  3. The CYCS gene is common to all eukaryotes and differs in the number of nucleotides in the sequence
• Nomenclature


  The internationally recognised naming system for all living things
• Abiotic


  • Weather
  • Mountains
  • Sun
  • Water
  • Dead animals
• Biotic


  • Animals
  • Trees
• Ecosystem


  The interaction of living organisms with their physical environment
• Components of an ecosystem

  • Abiotic (non living organism)
  • Biotic (living organisms)
• Abiotic factors


  • Water
  • Temperature
  • Fire
  • Light
  • Soil minerals
  • Gas levels
• Classification of organisms


  • Land
  • Flying
  • Water
• Phylogeny


  The evolutionary history of a group of organisms that can be shown in a phylogenetic tree