Protozoa And Microbes Flashcards
Mitochondria are the ‘batteries’ of eukaryotic cells. How can eukaryotic cells with NO mitochondria generate energy?
Cells can only obtain energy from aNAerobic respiration (in the ABSENCE) of oxygen.
Process is much less efficient than aerobic!
Why did the existence of micronucleus and macro nucleus NOT become the model for cell structure?
(Paramecium Cell)
Less efficient + more error prone!
Energy expensive to maintain?
How are Protozoa differentiated from fungi and diatoms?
Diatoms - more closely related to plants and have a Silica Shell
Fungi - Chitin cell wall / multicellular / heterotrophic (organism that consumes other org)
How can the 4 groups of Protozoa be characterised?
Mode of movement Mode of nutrition Habitat Mode of reproduction Possession of distinct organelles
How have we exploited Microbial Metabolic Pathways to our advantage?
Bread - yeast Wine - yeast Penicillin - filamentous fungus Vinegar - bacteria Nitrogen fixing bacteria - increases soil fertility
How do processes of microbial metabolism affect humans and animals in a HARMFUL way?
Dermatophytosis (ringworm) - requires keratin for growth!
Many microbes share our food source = crop failure + food borne disease!
Euglena is a protozoan that has characteristics of algae.
The type of evolution where there is MORE THAN 1 line of ancestry is called…
Chimera Process
What structure is NOT capable of survival outside of a host species?
Apicomplexa
An organism that derives energy from chemicals obtained by breaking down components of other organisms is described as…
Chemoheterotrophic
The function of Superoxide Dismutase is to…
Convert oxygen radicals to less toxic forms during aerobic respiration
What are 2 diseases caused by the protozoan pathogen?
Sleeping sickness
Malaria
What 2 forms of microorganisms can potentially be found in pasteurised milk?
Bacterial endospores
Archea
What 2 following mechanisms help microorganisms deal with growth under low pH conditions?
High number of cation transporters
Active proton pumping!
