Paper 2 Biology

• What are the 3 domains?


  Archaea, Bacteria and Eukarya.
• What are the 5 Kingdoms?


  Animalia, Plantae, Fungi, Protoctista, prokaryote
• What are the 3 reasons that there are 3 domains?


  Difference in;

  1. rRNA
  2. RNA polymerase
  3. Protein synthesis
• What is unicellular?


  Prokaryote
• What are multicellular?


  Protoctista, fungi, plantae, Animalia
• What evidence is used to classify organisms?

  Biochemistry (cytochrome C)

  DNA

  Behaviour
• What occurs at the post transcriptional level?


  Introns are removed to make mature mRNA

  Removed by a process called splicing
• What occurs at the post translational level?


  Activation and modification of proteins by cyclic AMP ( addition of non-protein groups )
• What is species evenness?


  The abundance of each species
• What is species richness?


  The number of different species
• What is allopatric speciation?


  Geographical barrier
• What is sympatric speciation?


  Sympatric speciation is the formation of new species without a geographical barrier
• What are the hardy Weinberg conditions?

  Large population

  Mating is random