week 6 - protists --> Euglenozia

Question 1

Euglenozoa superphyla

Answer 1

• Free living and parasitic
• Flagellated
  o Characteristic feature is a crystalline rod in flagellum
   For motility
   Unique flagella
• Generally has some sort of crystalline rod in it
• Sometimes formed of two flagella that work together within a Membrane sheeth
   Whipping action
   Cell moving in direction of flagella

Question 2

Euglenozoa superphyla
two major groups

Answer 2

• Kinetoplastids
• Euglenids

Question 3

Euglenozoa superphyla:
Kinetoplastids

Answer 3

• Contain KINETOPLAST:
  o Mass of DNA in a single large mitochondria
• Many are aquatic and feed on bacteria
• Some are parasites of animals
• Flagella is in cell wall as well as outside (so entire cell moves with flagella)
• Example: Trypanosoma
  o Membrane encased flagellum
  o African sleeping sickness or Chagas’ disease (dependent on species)

Question 4

Euglenozoa superphyla:
Euglenids

Answer 4

• Non-pathogenic
• Motile (2 flagella)
• Have chloroplasts
  o Many can switch between heterotrophic and phototrophic depending on light levels
• Aquatic
• Chemotrophic and phototrophic
• So can live in light and dark environments
• Some also able to feed on bacteria via phagocytosis